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Reig M, Aristoy MC, Toldrá F. Variability in the contents of pork meat nutrients and how it may affect food composition databases. Food Chem 2013; 140:478-82. [DOI: 10.1016/j.foodchem.2012.11.085] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2011] [Revised: 10/29/2012] [Accepted: 11/17/2012] [Indexed: 11/28/2022]
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Toldrá F, Aristoy MC, Mora L, Reig M. Innovations in value-addition of edible meat by-products. Meat Sci 2012; 92:290-6. [DOI: 10.1016/j.meatsci.2012.04.004] [Citation(s) in RCA: 193] [Impact Index Per Article: 16.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2012] [Revised: 03/29/2012] [Accepted: 04/02/2012] [Indexed: 11/24/2022]
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Bolondi L, Tak W, Gasbarrini A, Santoro A, Colombo M, Lim H, Mazzaferro V, Wiest R, Reig M, Bruix J. 6576 POSTER Phase II Safety Study of the Oral Multikinase Inhibitor Regorafenib (BAY 73-4506) as Second-line Therapy in Patients With Hepatocellular Carcinoma. Eur J Cancer 2011. [DOI: 10.1016/s0959-8049(11)71887-1] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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Reig M, Toldrá F. Patents for ELISA tests to detect antibiotic residues in foods of animal origin. Recent Pat Food Nutr Agric 2011; 3:110-114. [PMID: 21428870] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2010] [Accepted: 03/01/2011] [Indexed: 05/30/2023]
Abstract
The use of antibiotics in the European Union was banned since the 1(st) of January 2006. At present, and even though such ban, residues of drugs used in animal therapy or, illegally, as growth promoters might be found in food. Such residues may cause adverse health effects on consumers like allergic reactions in sensitive individuals develop transmissible antimicrobial resistance in food microflora, and have technological implications in the manufacture of fermented products. This is the reason why to check food for the presence of antibiotics residues is still necessary. ELISA test constitutes an attractive screening technique due to its simplicity, large number of samples per kit and possibility of automation. The aim of this manuscript is to provide a review of the numerous patents and applications for the analysis of antibiotic residues in foods.
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Baquero F, Fernandez-jorge A, Vicente MF, Alós JI, Reig M. Diversity Analysis of the Human Intestinal Flora: A Simple Method Based on Bacterial Morphotypes. MICROBIAL ECOLOGY IN HEALTH AND DISEASE 2009. [DOI: 10.3109/08910608809140188] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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Forner A, Rodríguez de Lope C, Reig M, Rimola J, Varela M. Diagnóstico precoz del cáncer primario de hígado: imagen versus genética. REVISTA ESPANOLA DE ENFERMEDADES DIGESTIVAS 2008; 100:423-9. [DOI: 10.4321/s1130-01082008000700008] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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Reig M, Toldrá F. Veterinary drug residues in meat: Concerns and rapid methods for detection. Meat Sci 2008; 78:60-7. [DOI: 10.1016/j.meatsci.2007.07.029] [Citation(s) in RCA: 73] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2007] [Revised: 07/27/2007] [Accepted: 07/27/2007] [Indexed: 10/23/2022]
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Reig M, Toldrá F. Liquid Chromatography for the Rapid Screening of Growth Promoters Residues in Meat. FOOD ANAL METHOD 2007. [DOI: 10.1007/s12161-007-9000-5] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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Reig M, Mora L, Navarro JL, Toldrá F. A chromatography method for the screening and confirmatory detection of dexamethasone. Meat Sci 2006; 74:676-80. [DOI: 10.1016/j.meatsci.2006.05.018] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2006] [Revised: 05/16/2006] [Accepted: 05/20/2006] [Indexed: 10/24/2022]
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Reig M, Batlle N, Navarro JL, Toldrá F. Stability of β-agonist methyl boronic derivatives before gas chromatography–mass spectrometry analysis. Anal Chim Acta 2005. [DOI: 10.1016/j.aca.2004.07.047] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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Toldra F, Reig M. Analysis of Meat-Containing Food. FOOD SCIENCE AND TECHNOLOGY 2004. [DOI: 10.1201/b11081-53] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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Galán JC, Morosini MI, Baquero MR, Reig M, Baquero F. Haemophilus influenzae bla(ROB-1) mutations in hypermutagenic deltaampC Escherichia coli conferring resistance to cefotaxime and beta-lactamase inhibitors and increased susceptibility to cefaclor. Antimicrob Agents Chemother 2003; 47:2551-7. [PMID: 12878518 PMCID: PMC166061 DOI: 10.1128/aac.47.8.2551-2557.2003] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
The clinical use of cefaclor has been shown to enrich Haemophilus influenzae populations harboring cefaclor-hydrolyzing ROB-1 beta-lactamase. Such a selective process may lead to the increased use of extended-spectrum cephalosporins or beta-lactams plus beta-lactamase inhibitors and, eventually, resistance to these agents, which has not previously been observed in H. influenzae. In order to establish which bla(ROB-1) mutations, if any, could confer resistance to extended-spectrum cephalosporins and/or to beta-lactamase inhibitors, a plasmid harboring bla(ROB-1) was transformed into hypermutagenic strain Escherichia coli GB20 (DeltaampC mutS::Tn10), and this construct was used in place of H. influenzae bla(ROB-1). Strain GB20 with the cloned gene was submitted to serial passages in tubes containing broth with increasing concentrations of selected beta-lactams (cefotaxime or amoxicillin-clavulanate). Different mutations in the bla(ROB-1) gene were obtained during the passages in the presence of the different concentrations of the selective agents. Mutants resistant to extended-spectrum cephalosporins harbored either the Leu169-->Ser169 or the Arg164-->Trp164 substitution or the double amino acid change Arg164-->Trp164 and Ala237-->Thr237. ROB-1 mutants that were resistant to beta-lactams plus beta-lactamase inhibitors and that harbored the Arg244-->Cys244 or the Ser130-->Gly130 replacement were also obtained. The cefaclor-hydrolyzing efficiencies of the ROB-1 variants were strongly decreased in all mutants, suggesting that if bla(ROB-1) mutants were selected by cefaclor, this drug would prevent the further evolution of this beta-lactamase toward molecular forms able to resist extended-spectrum cephalosporins or beta-lactamase inhibitors.
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Loza E, Morosini MI, Cantón R, Almaraz F, Reig M, Baquero F. [Comparative in vitro activity of ertapenem against aerobic and anaerobic bacteria]. REVISTA ESPANOLA DE QUIMIOTERAPIA : PUBLICACION OFICIAL DE LA SOCIEDAD ESPANOLA DE QUIMIOTERAPIA 2003; 16:209-15. [PMID: 12973459] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 03/04/2023]
Abstract
The in vitro activity of ertapenem (MK-0826), a new carbapenem, was studied against 389 aerobic microorganisms (187 Enterobacteriaceae, 15 Aeromonas spp., 42 Staphylococcus spp., 43 Streptococcus spp., 15 Enterococcus spp., 30 Haemophilus spp., 15 Moraxella catarrhalis, 12 Neisseria gonorrhoeae, 15 Pseudomonas aeruginosa and 15 Acinetobacter spp.) and 54 anaerobic isolates (15 Clostridium spp., 12 Peptostreptococcus spp. and 27 fragilis group Bacteroides recovered from four Spanish hospitals. Ertapenem activity was compared with that of imipenem, piperacillin-tazobactam, cefoxitin, ceftriaxone, ceftazidime, cefepime, and norfloxacin. Ertapenem was the most active antibiotic against Enterobacteriaceae (MIC(90) < or =0.5 mg/l) particularly in the case of broad-spectrum, extended-spectrum and chromosomally encoded AmpC betalactamase-producing strains. Ertapenem exhibited less activity, even lower than that of imipenem, against P. aeruginosa, Acinetobacter spp. and enterococci (MIC(90) > or =16 mg/l). Ertapenem was active against methicillin-susceptible S. aureus and coagulase-negative staphylococci, beta-haemolytic streptococci, and Streptococcus pneumoniae (MIC(90) < or =1 mg/l). In the case of Haemophilus spp., M. catarrhalis and N. gonorrhoeae, ertapenem, with a MIC(90) < or =0.06 mg/l resulted the most active antibiotic tested. When considering the anaerobes, ertapenem displayed a broad spectrum of activity, similar to that of imipenem, against Clostridium spp. (MIC(90) 2 mg/l) and was slightly less active against Bacteroides fragilis (MIC(90) 0.5 mg/l). Both carbapenems were the most active among the tested compounds. Due to its activity against almost all pathogens studied, ertapenem appears to be an option for the treatment of mixed bacterial infections.
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Pereda T, Gavilán F, Giráldez A, Sayago M, Serrano J, Gómez MA, Garcia I, Tamayo MJ, Martin C, Reig M, Hinojosa R, Pérez-Bernal J, Sousa JM, Cañas E, Bernardos A. Hereditary nonsyndromic paucity of intrahepatic bile ducts as an indication for liver transplantation. Transplant Proc 2003; 35:719-20. [PMID: 12644110 DOI: 10.1016/s0041-1345(03)00063-0] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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Gavilán F, Pereda T, Sousa JM, Serrano J, Gómez MA, García I, Tamayo MJ, Martin C, Reig M, Hinojosa R, Pérez-Bernal J, Cañas E, Bernardos A. Hepatic cirrhosis with sarcoid granulomas. Differential diagnosis and liver transplantation: a case report. Transplant Proc 2003; 35:713-4. [PMID: 12644107 DOI: 10.1016/s0041-1345(03)00060-5] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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Reig M, Galan J, Baquero F, Perez-Diaz JC. Macrolide resistance in Peptostreptococcus spp. mediated by ermTR: possible source of macrolide-lincosamide-streptogramin B resistance in Streptococcus pyogenes. Antimicrob Agents Chemother 2001; 45:630-2. [PMID: 11158770 PMCID: PMC90342 DOI: 10.1128/aac.45.2.630-632.2001] [Citation(s) in RCA: 32] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
Eighty percent (21 of 26) of macrolide-resistant Peptostreptococcus strains studied harbored the ermTR gene. This methyltransferase gene is also the most frequently found gene among macrolide-lincosamide-streptogramin B-resistant Streptococcus pyogenes strains. Transfer of the ermTR gene from Peptostreptococcus magnus to macrolide-susceptible S. pyogenes strains indicates that this resistance determinant may circulate among gram-positive aerobic and anaerobic species of the oropharyngeal bacterial flora.
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Galán JC, Reig M, Navas A, Baquero F, Blázquez J. ACI-1 from Acidaminococcus fermentans: characterization of the first beta-lactamase in Anaerobic cocci. Antimicrob Agents Chemother 2000; 44:3144-9. [PMID: 11036038 PMCID: PMC101618 DOI: 10.1128/aac.44.11.3144-3149.2000] [Citation(s) in RCA: 21] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
Acidaminococcus fermentans belongs to the group of strictly anaerobic gram-negative cocci. All previously described Acidaminococcus strains are susceptible to beta-lactam antibiotics. An A. fermentans strain (RYC-MR95) resistant to penicillin and expanded-spectrum cephalosporin (amoxicillin and cefotaxime MICs, 64 microgram/ml) was isolated from a human perianal abscess. A fragment encoding a beta-lactamase from genomic DNA was cloned in Escherichia coli K-12 strain HB101, and the recombinant strain expressed resistance to amoxicillin (MIC, 1,024 microgram/ml) and cefotaxime (MIC, 4 microgram/ml). Clavulanic acid decreased the MICs to 8 and 0.03 microgram/ml, respectively. Analysis of the nucleotide sequence revealed a new class A beta-lactamase, ACI-1. In accordance with its biochemical properties, we propose to assign ACI-1 to functional group 2be. The ACI-1 enzyme (estimated pI 4.3) had <50% amino acid identity with any other class A beta-lactamases, the closest being ROB-1 from Haemophilus influenzae (44%). ACI-1 was closer to class A beta-lactamases from some gram-positive organisms (41 to 44% amino acid identity with Bacillus beta-lactamases) than to most class A enzymes from gram-negative organisms (TEM-1, 24.6%). The aci1 gene had a G+C content of 42.1%, in contrast with 56% G+C content for genomic DNA from A. fermentans, thus suggesting that aci1 may have been obtained by horizontal gene transfer.
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Reig M, Calderón C, Baquero F. Resistance of Veillonella to Hydrosoluble Pristinamycins: A Possible Outer Membrane Barrier Effect. Anaerobe 1995; 1:93-6. [PMID: 16887512 DOI: 10.1006/anae.1995.1003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
An in vitro study on 25 Veillonella strains showed a consistent clindamycin susceptibility with resistance to erythromycin and to the hydrosoluble pristinamycins, quinupristin and dalfopristin and its 30:70 combination, the synergistin RP59500. Double erythromycin-clindamycin disk tests did not show any inducible resistance pattern. The addition of 10 or 50 mug/mL of polymyxin B nonapeptide, an outer membrane permeabilizing agent, consistently reduced quinupristin and dalfopristin MICs in most strains. This result suggests that the Veillonella outer membrane may act as a permeability barrier to these antibiotics, as in the case of other Gram-negative bacteria.
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Reig M, Baquero F. Antibacterial activity of clavulanate and tazobactam on Peptostreptococcus spp. J Antimicrob Chemother 1994; 33:358-9. [PMID: 8182024 DOI: 10.1093/jac/33.2.358] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023] Open
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Baquero F, Reig M. Resistance of anaerobic bacteria to antimicrobial agents in Spain. Eur J Clin Microbiol Infect Dis 1992; 11:1016-20. [PMID: 1295754 DOI: 10.1007/bf01967792] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
As a consequence of antibiotic consumption, the entire microbial ecosystem attached to man is evolving towards resistance. In Spain, penicillin resistance (MIC > 0.5 mg/l) is found in about 10% of Peptostreptococcus, Clostridium perfringens and Eubacterium, and in 50% of Veillonella. Cefoxitin resistance ( > 2 mg/l) is present in 10 to 20% of Peptostreptococcus and Clostridium, and in 50% of Eubacterium; 21% of Bacteroides (fragilis group) strains are resistant to 16 mg/l. A very low rate of imipenem resistance (> or = 128 mg/l) is found among Bacteroides (1%), but for 5% of the isolates MICs of imipenem are 2 to 4 mg/l. Metronidazole resistance ( > 8 mg/l) is found in 5 to 10% of Peptostreptococcus, Clostridium and Veillonella, and in less than 1% of the Bacteroides fragilis group. Erythromycin resistance ( > 2 mg/l) is present in over two-thirds of the Peptostreptococcus, Veillonella and Fusobacterium isolates, and in 27% of the Clostridium perfringens strains. Clindamycin resistance ( > 4 mg/l) is found in 10 to 20% of the Peptostreptococcus, Clostridium and Eubacterium isolates, and in 20% of the Bacteroides of the fragilis group, this rate being higher (30%) among faecal isolates.
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Jimenez-Diaz A, Reig M, Baquero F, Ballesta JP. Antibiotic sensitivity of ribosomes from wild-type and clindamycin resistant Bacteroides vulgatus strains. J Antimicrob Chemother 1992; 30:295-301. [PMID: 1452494 DOI: 10.1093/jac/30.3.295] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022] Open
Abstract
The sensitivity to different antibiotics of in-vitro polyuridylic acid-dependent polypeptide synthesizing system from Bacteroides vulgatus RYC18F6 and two clindamycin-resistant derivatives was studied. The ribosomes from the resistant strains were not affected by concentrations of up to 0.1 mM clindamycin and lincomycin. In contrast, streptogramin B was found to cause strong stimulation of the clindamycin-resistant polymerizing systems. The modified ribosomes from the resistant strains were more sensitive to other antibiotics like sparsomycin and chloramphenicol. The data indicate that resistance in these B. vulgatus mutant strains is due to alteration of the ribosome structure.
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Reig M, Fernández MC, Ballesta JP, Baquero F. Inducible expression of ribosomal clindamycin resistance in Bacteroides vulgatus. Antimicrob Agents Chemother 1992; 36:639-42. [PMID: 1622176 PMCID: PMC190570 DOI: 10.1128/aac.36.3.639] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022] Open
Abstract
The abilities of erythromycin and clindamycin to act as inducers of clindamycin resistance in the strain Bacteroides vulgatus RYC18F6 is evaluated in vivo (efficiency of plating of inhibitory clindamycin concentrations) and in vitro [efficiency of poly(U)-directed polypeptide synthesis by ribosomes]. Uninduced cells failed to grow during the first 72 h, even at a very low clindamycin concentration (0.1 microgram/ml); after induction with erythromycin or clindamycin, cells were able to form colonies at 32 micrograms/ml after 48 h. The in vitro polymerization test with B. vulgatus RYC18F6 ribosomes (S-30 extract) showed that ribosomes from uninduced cells were fully sensitive to the inhibitory effect of clindamycin. Ribosomes obtained from erythromycin- or clindamycin-induced cells presented a reduced sensitivity to clindamycin inhibition. These results show that resistance to clindamycin in B. vulgatus RYC18F6 is an inducible phenomenon involving a ribosomal modification, probably similar to that previously described for gram-positive bacteria.
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Reig M, Moreno A, Baquero F. Resistance of Peptostreptococcus spp. to macrolides and lincosamides: inducible and constitutive phenotypes. Antimicrob Agents Chemother 1992; 36:662-4. [PMID: 1622181 PMCID: PMC190575 DOI: 10.1128/aac.36.3.662] [Citation(s) in RCA: 19] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022] Open
Abstract
The activities of erythromycin and clindamycin against 350 Peptostreptococcus strains were studied during a 5-year period (1986 to 1991). In 5.1% of the Peptostreptococcus strains, which presented dissociated resistance (clindamycin MIC, less than or equal to 1 microgram/ml; erythromycin MIC, greater than 8 micrograms/ml), evidence of inducible macrolide-lincosamide resistance was shown. A total of 17.7% of the strains presented a constitutive phenotype; the clindamycin and erythromycin MICs for these strains were greater than 8 micrograms/ml.
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