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Affiliation(s)
- Anna Porwit
- Department of Clinical Sciences Lund, Oncology and Pathology, Faculty of MedicineLund University Lund Sweden
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Affiliation(s)
- Anna Porwit
- Department of Clinical Sciences Lund, Oncology and Pathology, Faculty of MedicineLund University Lund Sweden
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Porwit A, Béné MC. Multiparameter flow cytometry applications in the diagnosis of mixed phenotype acute leukemia. CYTOMETRY PART B-CLINICAL CYTOMETRY 2019. [DOI: 10.1002/cyto.b.21783 or extractvalue(1224,concat(0x5c,0x7170707871,(select (elt(1224=1224,1))),0x7162627671))] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Anna Porwit
- Department of Clinical Sciences Lund, Oncology and Pathology, Faculty of MedicineLund University Lund Sweden
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Affiliation(s)
- Anna Porwit
- Department of Clinical Sciences Lund, Oncology and Pathology, Faculty of MedicineLund University Lund Sweden
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Affiliation(s)
- Anna Porwit
- Department of Clinical Sciences Lund, Oncology and Pathology, Faculty of MedicineLund University Lund Sweden
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Porwit A, Béné MC. Multiparameter flow cytometry applications in the diagnosis of mixed phenotype acute leukemia. CYTOMETRY PART B-CLINICAL CYTOMETRY 2019. [DOI: 10.1002/cyto.b.21783 rlike (select (case when (2397=1595) then 0x31302e313030322f6379746f2e622e3231373833 else 0x28 end))-- mlwg] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Anna Porwit
- Department of Clinical Sciences Lund, Oncology and Pathology, Faculty of MedicineLund University Lund Sweden
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Porwit A, Béné MC. Multiparameter flow cytometry applications in the diagnosis of mixed phenotype acute leukemia. CYTOMETRY PART B-CLINICAL CYTOMETRY 2019. [DOI: 10.1002/cyto.b.21783 procedure analyse(extractvalue(1697,concat(0x5c,0x7170707871,(select (case when (1697=1697) then 1 else 0 end)),0x7162627671)),1)-- dotb] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Anna Porwit
- Department of Clinical Sciences Lund, Oncology and Pathology, Faculty of MedicineLund University Lund Sweden
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Porwit A, Béné MC. Multiparameter flow cytometry applications in the diagnosis of mixed phenotype acute leukemia. CYTOMETRY PART B-CLINICAL CYTOMETRY 2019. [DOI: 10.1002/cyto.b.21783 rlike (select (case when (2220=2220) then 0x31302e313030322f6379746f2e622e3231373833 else 0x28 end))-- yagd] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Anna Porwit
- Department of Clinical Sciences Lund, Oncology and Pathology, Faculty of MedicineLund University Lund Sweden
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Porwit A, Béné MC. Multiparameter flow cytometry applications in the diagnosis of mixed phenotype acute leukemia. CYTOMETRY PART B-CLINICAL CYTOMETRY 2019. [DOI: 10.1002/cyto.b.21783 procedure analyse(extractvalue(1697,concat(0x5c,0x7170707871,(select (case when (1697=1697) then 1 else 0 end)),0x7162627671)),1)] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Anna Porwit
- Department of Clinical Sciences Lund, Oncology and Pathology, Faculty of MedicineLund University Lund Sweden
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Porwit A, Béné MC. Multiparameter flow cytometry applications in the diagnosis of mixed phenotype acute leukemia. CYTOMETRY PART B-CLINICAL CYTOMETRY 2019. [DOI: 10.1002/cyto.b.21783 rlike (select (case when (8458=4072) then 0x31302e313030322f6379746f2e622e3231373833 else 0x28 end))] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Anna Porwit
- Department of Clinical Sciences Lund, Oncology and Pathology, Faculty of MedicineLund University Lund Sweden
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Affiliation(s)
- Anna Porwit
- Department of Clinical Sciences Lund, Oncology and Pathology, Faculty of MedicineLund University Lund Sweden
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Porwit A, Béné MC. Multiparameter flow cytometry applications in the diagnosis of mixed phenotype acute leukemia. CYTOMETRY PART B-CLINICAL CYTOMETRY 2019. [DOI: 10.1002/cyto.b.21783 order by 1-- adlw] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Anna Porwit
- Department of Clinical Sciences Lund, Oncology and Pathology, Faculty of MedicineLund University Lund Sweden
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Porwit A, Béné MC. Multiparameter flow cytometry applications in the diagnosis of mixed phenotype acute leukemia. CYTOMETRY PART B-CLINICAL CYTOMETRY 2019. [DOI: 10.1002/cyto.b.21783 and 1217=5418-- qlta] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Anna Porwit
- Department of Clinical Sciences Lund, Oncology and Pathology, Faculty of MedicineLund University Lund Sweden
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Porwit A, Béné MC. Multiparameter flow cytometry applications in the diagnosis of mixed phenotype acute leukemia. CYTOMETRY PART B-CLINICAL CYTOMETRY 2019. [DOI: 10.1002/cyto.b.21783 and extractvalue(1180,concat(0x5c,0x7170707871,(select (elt(1180=1180,1))),0x7162627671))] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Anna Porwit
- Department of Clinical Sciences Lund, Oncology and Pathology, Faculty of MedicineLund University Lund Sweden
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Porwit A, Béné MC. Multiparameter flow cytometry applications in the diagnosis of mixed phenotype acute leukemia. CYTOMETRY PART B-CLINICAL CYTOMETRY 2019. [DOI: 10.1002/cyto.b.21783 and (select (case when (2892=2892) then null else ctxsys.drithsx.sn(1,2892) end) from dual) is null] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- Anna Porwit
- Department of Clinical Sciences Lund, Oncology and Pathology, Faculty of MedicineLund University Lund Sweden
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Porwit A, Béné MC. Multiparameter flow cytometry applications in the diagnosis of mixed phenotype acute leukemia. CYTOMETRY PART B-CLINICAL CYTOMETRY 2019. [DOI: 10.1002/cyto.b.21783 and extractvalue(1180,concat(0x5c,0x7170707871,(select (elt(1180=1180,1))),0x7162627671))-- evzo] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- Anna Porwit
- Department of Clinical Sciences Lund, Oncology and Pathology, Faculty of MedicineLund University Lund Sweden
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Affiliation(s)
- Anna Porwit
- Department of Clinical Sciences Lund, Oncology and Pathology, Faculty of MedicineLund University Lund Sweden
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Affiliation(s)
- Anna Porwit
- Department of Clinical Sciences Lund, Oncology and Pathology, Faculty of MedicineLund University Lund Sweden
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Affiliation(s)
- Anna Porwit
- Department of Clinical Sciences Lund, Oncology and Pathology, Faculty of MedicineLund University Lund Sweden
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Porwit A, Béné MC. Multiparameter flow cytometry applications in the diagnosis of mixed phenotype acute leukemia. CYTOMETRY PART B-CLINICAL CYTOMETRY 2019. [DOI: 10.1002/cyto.b.21783 and (select (case when (2892=2892) then null else ctxsys.drithsx.sn(1,2892) end) from dual) is null-- lgvs] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Anna Porwit
- Department of Clinical Sciences Lund, Oncology and Pathology, Faculty of MedicineLund University Lund Sweden
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Affiliation(s)
- Anna Porwit
- Department of Clinical Sciences Lund, Oncology and Pathology, Faculty of MedicineLund University Lund Sweden
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Porwit A, Béné MC. Multiparameter flow cytometry applications in the diagnosis of mixed phenotype acute leukemia. CYTOMETRY PART B-CLINICAL CYTOMETRY 2019. [DOI: 10.1002/cyto.b.21783 and 8193=(select (case when (8193=1440) then 8193 else (select 1440 union select 7618) end))-- wyue] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Anna Porwit
- Department of Clinical Sciences Lund, Oncology and Pathology, Faculty of MedicineLund University Lund Sweden
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Affiliation(s)
- Anna Porwit
- Department of Clinical Sciences Lund, Oncology and Pathology, Faculty of MedicineLund University Lund Sweden
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Porwit A, Béné MC. Multiparameter flow cytometry applications in the diagnosis of mixed phenotype acute leukemia. CYTOMETRY PART B-CLINICAL CYTOMETRY 2019. [DOI: 10.1002/cyto.b.21783 order by 1-- ciuf] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Anna Porwit
- Department of Clinical Sciences Lund, Oncology and Pathology, Faculty of MedicineLund University Lund Sweden
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Affiliation(s)
- Anna Porwit
- Department of Clinical Sciences Lund, Oncology and Pathology, Faculty of MedicineLund University Lund Sweden
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Affiliation(s)
- Anna Porwit
- Department of Clinical Sciences Lund, Oncology and Pathology, Faculty of MedicineLund University Lund Sweden
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Porwit A, Béné MC. Multiparameter flow cytometry applications in the diagnosis of mixed phenotype acute leukemia. CYTOMETRY PART B-CLINICAL CYTOMETRY 2019. [DOI: 10.1002/cyto.b.21783 and (select (case when (8983=5378) then null else cast((chr(100)||chr(108)||chr(65)||chr(65)) as numeric) end)) is null] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Anna Porwit
- Department of Clinical Sciences Lund, Oncology and Pathology, Faculty of MedicineLund University Lund Sweden
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Porwit A, Béné MC. Multiparameter flow cytometry applications in the diagnosis of mixed phenotype acute leukemia. CYTOMETRY PART B-CLINICAL CYTOMETRY 2019. [DOI: 10.1002/cyto.b.21783 rlike (select (case when (2220=2220) then 0x31302e313030322f6379746f2e622e3231373833 else 0x28 end))] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Anna Porwit
- Department of Clinical Sciences Lund, Oncology and Pathology, Faculty of MedicineLund University Lund Sweden
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Porwit A, Béné MC. Multiparameter flow cytometry applications in the diagnosis of mixed phenotype acute leukemia. CYTOMETRY PART B-CLINICAL CYTOMETRY 2019. [DOI: 10.1002/cyto.b.21783 order by 1#] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Anna Porwit
- Department of Clinical Sciences Lund, Oncology and Pathology, Faculty of MedicineLund University Lund Sweden
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Porwit A, Béné MC. Multiparameter flow cytometry applications in the diagnosis of mixed phenotype acute leukemia. CYTOMETRY PART B-CLINICAL CYTOMETRY 2019. [DOI: 10.1002/cyto.b.21783 and (select (case when (8951=8951) then null else cast((chr(80)||chr(107)||chr(78)||chr(65)) as numeric) end)) is null] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Anna Porwit
- Department of Clinical Sciences Lund, Oncology and Pathology, Faculty of MedicineLund University Lund Sweden
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Affiliation(s)
- Anna Porwit
- Department of Clinical Sciences Lund, Oncology and Pathology, Faculty of MedicineLund University Lund Sweden
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Porwit A, Béné MC. Multiparameter flow cytometry applications in the diagnosis of mixed phenotype acute leukemia. CYTOMETRY PART B-CLINICAL CYTOMETRY 2019. [DOI: 10.1002/cyto.b.21783 or extractvalue(1224,concat(0x5c,0x7170707871,(select (elt(1224=1224,1))),0x7162627671))-- eljp] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Anna Porwit
- Department of Clinical Sciences Lund, Oncology and Pathology, Faculty of MedicineLund University Lund Sweden
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Porwit A, Béné MC. Multiparameter flow cytometry applications in the diagnosis of mixed phenotype acute leukemia. CYTOMETRY PART B-CLINICAL CYTOMETRY 2019. [DOI: 10.1002/cyto.b.21783 and 5328=5155] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Anna Porwit
- Department of Clinical Sciences Lund, Oncology and Pathology, Faculty of MedicineLund University Lund Sweden
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Porwit A, Béné MC. Multiparameter flow cytometry applications in the diagnosis of mixed phenotype acute leukemia. CYTOMETRY PART B-CLINICAL CYTOMETRY 2019. [DOI: 10.1002/cyto.b.21783 and (select (case when (8951=8951) then null else cast((chr(80)||chr(107)||chr(78)||chr(65)) as numeric) end)) is null-- fcav] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Anna Porwit
- Department of Clinical Sciences Lund, Oncology and Pathology, Faculty of MedicineLund University Lund Sweden
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Affiliation(s)
- Anna Porwit
- Department of Clinical Sciences Lund, Oncology and Pathology, Faculty of MedicineLund University Lund Sweden
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Affiliation(s)
- Anna Porwit
- Department of Clinical Sciences Lund, Oncology and Pathology, Faculty of MedicineLund University Lund Sweden
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Porwit A, Béné MC. Multiparameter flow cytometry applications in the diagnosis of mixed phenotype acute leukemia. CYTOMETRY PART B-CLINICAL CYTOMETRY 2019. [DOI: 10.1002/cyto.b.21783 or (select 3518 from(select count(*),concat(0x7170707871,(select (elt(3518=3518,1))),0x7162627671,floor(rand(0)*2))x from information_schema.plugins group by x)a)] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Anna Porwit
- Department of Clinical Sciences Lund, Oncology and Pathology, Faculty of MedicineLund University Lund Sweden
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Porwit A, Béné MC. Multiparameter flow cytometry applications in the diagnosis of mixed phenotype acute leukemia. CYTOMETRY PART B-CLINICAL CYTOMETRY 2019. [DOI: 10.1002/cyto.b.21783 and (select (case when (1060=9577) then null else ctxsys.drithsx.sn(1,1060) end) from dual) is null-- tpsl] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Anna Porwit
- Department of Clinical Sciences Lund, Oncology and Pathology, Faculty of MedicineLund University Lund Sweden
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Porwit A, Béné MC. Multiparameter flow cytometry applications in the diagnosis of mixed phenotype acute leukemia. CYTOMETRY PART B-CLINICAL CYTOMETRY 2019. [DOI: 10.1002/cyto.b.21783 and (select 4939 from(select count(*),concat(0x7170707871,(select (elt(4939=4939,1))),0x7162627671,floor(rand(0)*2))x from information_schema.plugins group by x)a)] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Anna Porwit
- Department of Clinical Sciences Lund, Oncology and Pathology, Faculty of MedicineLund University Lund Sweden
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Affiliation(s)
- Anna Porwit
- Department of Clinical Sciences Lund, Oncology and Pathology, Faculty of MedicineLund University Lund Sweden
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Porwit A, Béné MC. Multiparameter flow cytometry applications in the diagnosis of mixed phenotype acute leukemia. CYTOMETRY PART B-CLINICAL CYTOMETRY 2019; 96:183-194. [DOI: 10.1002/cyto.b.21783] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/16/2018] [Revised: 03/26/2019] [Accepted: 03/27/2019] [Indexed: 01/09/2023]
Affiliation(s)
- Anna Porwit
- Department of Clinical Sciences Lund, Oncology and Pathology, Faculty of MedicineLund University Lund Sweden
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Affiliation(s)
- Anna Porwit
- Department of Clinical Sciences Lund, Oncology and Pathology, Faculty of MedicineLund University Lund Sweden
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Porwit A, Béné MC. Multiparameter flow cytometry applications in the diagnosis of mixed phenotype acute leukemia. CYTOMETRY PART B-CLINICAL CYTOMETRY 2019. [DOI: 10.1002/cyto.b.21783 and (select (case when (7918=8049) then null else cast((chr(86)||chr(82)||chr(121)||chr(120)) as numeric) end)) is null-- tdsx] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Anna Porwit
- Department of Clinical Sciences Lund, Oncology and Pathology, Faculty of MedicineLund University Lund Sweden
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Porwit A, Béné MC. Multiparameter flow cytometry applications in the diagnosis of mixed phenotype acute leukemia. CYTOMETRY PART B-CLINICAL CYTOMETRY 2019. [DOI: 10.1002/cyto.b.21783 and (select (case when (4013=1059) then null else ctxsys.drithsx.sn(1,4013) end) from dual) is null] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Anna Porwit
- Department of Clinical Sciences Lund, Oncology and Pathology, Faculty of MedicineLund University Lund Sweden
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Porwit A, Béné MC. Multiparameter flow cytometry applications in the diagnosis of mixed phenotype acute leukemia. CYTOMETRY PART B-CLINICAL CYTOMETRY 2019. [DOI: 10.1002/cyto.b.21783 and 4849=4849-- dmuz] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Anna Porwit
- Department of Clinical Sciences Lund, Oncology and Pathology, Faculty of MedicineLund University Lund Sweden
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Porwit A, Béné MC. Multiparameter flow cytometry applications in the diagnosis of mixed phenotype acute leukemia. CYTOMETRY PART B-CLINICAL CYTOMETRY 2019. [DOI: 10.1002/cyto.b.21783 and 4685=(select (case when (4685=4685) then 4685 else (select 8730 union select 8797) end))-- hylr] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- Anna Porwit
- Department of Clinical Sciences Lund, Oncology and Pathology, Faculty of MedicineLund University Lund Sweden
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Affiliation(s)
- Anna Porwit
- Department of Clinical Sciences Lund, Oncology and Pathology, Faculty of MedicineLund University Lund Sweden
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Porwit A, Béné MC. Multiparameter flow cytometry applications in the diagnosis of mixed phenotype acute leukemia. CYTOMETRY PART B-CLINICAL CYTOMETRY 2019. [DOI: 10.1002/cyto.b.21783 and 4849=4849] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- Anna Porwit
- Department of Clinical Sciences Lund, Oncology and Pathology, Faculty of MedicineLund University Lund Sweden
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Abstract
CD4(+) T cells play a key role in host defense against Pneumocystis infection. To define the role of naïve CD4(+) T cell production through the thymopoietic response in host defense against Pneumocystis infection, Pneumocystis murina infection in the lung was induced in adult male C57BL/6 mice with and without prior thymectomy. Pneumocystis infection caused a significant increase in the number of CCR9(+) multipotent progenitor (MPP) cells in the bone marrow and peripheral circulation, an increase in populations of earliest thymic progenitors (ETPs) and double negative (DN) thymocytes in the thymus, and recruitment of naïve and total CD4(+) T cells into the alveolar space. The level of murine signal joint T cell receptor excision circles (msjTRECs) in spleen CD4(+) cells was increased at 5 weeks post-Pneumocystis infection. In thymectomized mice, the numbers of naïve, central memory, and total CD4(+) T cells in all tissues examined were markedly reduced following Pneumocystis infection. This deficiency of naïve and central memory CD4(+) T cells was associated with delayed pulmonary clearance of Pneumocystis. Extracts of Pneumocystis resulted in an increase in the number of CCR9(+) MPPs in the cultured bone marrow cells. Stimulation of cultured bone marrow cells with ligands to Toll-like receptor 2 ([TLR-2] zymosan) and TLR-9 (ODN M362) each caused a similar increase in CCR9(+) MPP cells via activation of the Jun N-terminal protein kinase (JNK) pathway. These results demonstrate that enhanced production of naïve CD4(+) T lymphocytes through the thymopoietic response and enhanced delivery of lymphopoietic precursors from the bone marrow play an important role in host defense against Pneumocystis infection.
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Li P, Huang J, Tian HJ, Huang QY, Jiang CH, Gao YQ. Regulation of bone marrow hematopoietic stem cell is involved in high-altitude erythrocytosis. Exp Hematol 2010; 39:37-46. [PMID: 20977927 DOI: 10.1016/j.exphem.2010.10.006] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2010] [Revised: 10/18/2010] [Accepted: 10/19/2010] [Indexed: 12/22/2022]
Abstract
OBJECTIVE Hypoxia at high altitudes can lead to increased production of red blood cells through the hormone erythropoietin (EPO). In this study, we observed how the EPO-unresponsive hematopoietic stem cell (HSC) compartment responds to high-altitude hypoxic environments and contributes to erythropoiesis. MATERIALS AND METHODS Using a mouse model at simulated high altitude, the bone marrow (BM) and spleen lineage marker(-)Sca-1(+)c-Kit(+) (LSK) HSC compartment were observed in detail. Normal LSK cells were then cultured under different conditions (varying EPO levels, oxygen concentrations, and BM supernatants) to investigate the causes of the HSC responses. RESULTS Hypoxic mice exhibited a marked expansion in BM and spleen LSK compartments, which were associated with enhanced proliferation. BM HSCs seemed to play a more important role in erythropoiesis at high altitude than spleen HSCs. There was also a lineage fate change of BM HSCs in hypoxic mice that was manifested in increased megakaryocyte-erythrocyte progenitors and periodically reduced granulocyte-macrophage progenitors in the BM. The LSK cells in hypoxic mice displayed upregulated erythroid-specific GATA-1 and downregulated granulocyte-macrophage-specific PU.1 messenger RNA expression, as well as the capacity to differentiate into more erythroid precursors after culture. BM culture supernatant from hypoxic mice (but not elevated EPO or varying O(2) tension) could induce expansion and erythroid-priority differentiation of the HSC population, a phenomenon partially caused by increasing interleukin-3 and interleukin-6 secretion in the BM. CONCLUSIONS The present study suggests a new EPO-independent HSC mechanism of high-altitude erythrocytosis.
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Affiliation(s)
- Peng Li
- Department of High Altitude Military Hygiene, College of High Altitude Military Medicine, Third Military Medical University, Chongqing, PR China
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