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Structural Basis for Rabbit Hemorrhagic Disease Virus Antibody Specificity. J Virol 2022; 96:e0121722. [PMID: 36326275 PMCID: PMC9682983 DOI: 10.1128/jvi.01217-22] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
Isolated RHDV antibodies have been used for decades to distinguish between antigenic variants, monitor temporal capsid evolution, and examine neutralizing capacities. In this study, we provided the structural basis for an RHDV GI.2 specific diagnostic antibody (2D9) binding and reveal that a small number of amino acid substitutions at the binding site could differentiate between RHDV GI.2 and GI.1b.
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Development and Evaluation of a Duplex Lateral Flow Assay for the Detection and Differentiation between Rabbit Haemorrhagic Disease Virus Lagovirus europaeus/GI.1 and /GI.2. BIOLOGY 2022; 11:biology11030401. [PMID: 35336775 PMCID: PMC8945490 DOI: 10.3390/biology11030401] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/08/2022] [Revised: 03/01/2022] [Accepted: 03/03/2022] [Indexed: 01/27/2023]
Abstract
Simple Summary Rabbit Haemorrhagic Disease is caused by a virus that affects the liver, the spleen and the lungs of rabbits, causing hepatitis, splenomegaly and haemorrhages. A new genotype of the virus was first reported in France in 2010 and has spread globally since then, replacing most of the circulating former viruses in many countries. The detection of the virus and the differentiation of both genotypes is of crucial importance for disease surveillance. In this article, a rapid test for antigen detection is described and evaluated, providing the first description of a quick and easy-to-use test that allows for the simultaneous detection and differentiation of the genotypes. A total of 136 samples, rabbit liver samples and liver exudates (liquid collected after freeze–thawing) classified as infected and non-infected, were analysed, with good results. These data confirm that the developed rapid test can be used as a reliable diagnostic test for disease surveillance, especially in farms and the field. Abstract Rabbit Haemorrhagic Disease Virus 2 (RHDV2, recently named Lagovirus europaeus/GI.2) was first reported in France in 2010 and has spread globally since then, replacing most of the circulating former RHDV (genotype GI.1) in many countries. The detection and differentiation of both genotypes is of crucial importance for the surveillance of the disease. In this article, a duplex lateral flow assay (LFA) for antigen detection is described and evaluated, providing the first description of a quick and easy-to-use test that allows for the simultaneous detection and differentiation of RHDV genotypes GI.1 and GI.2. A panel of GI.1- or GI.2-infected and non-infected rabbit liver samples and liver exudates (136 samples) was analysed, obtaining a total sensitivity of 94.4% and specificity of 100%. These data confirm that the developed duplex LFA can be used as a reliable diagnostic test for RHD surveillance, especially in farms and the field.
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Yu H, Qiu H, Ma W, Maitz MF, Tu Q, Xiong K, Chen J, Huang N, Yang Z. Endothelium-Mimicking Surface Combats Thrombosis and Biofouling via Synergistic Long- and Short-Distance Defense Strategy. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2021; 17:e2100729. [PMID: 33991047 DOI: 10.1002/smll.202100729] [Citation(s) in RCA: 24] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/03/2021] [Indexed: 06/12/2023]
Abstract
Thrombosis and infections are the main causes of implant failures (e.g., extracorporeal circuits and indwelling medical devices), which induce significant morbidity and mortality. In this work, an endothelium-mimicking surface is engineered, which combines the nitric oxide (NO)-generating property and anti-fouling function of a healthy endothelium. The released gas signal molecules NO and the glycocalyx matrix macromolecules hyaluronic acid (HA) jointly combine long- and short-distance defense actions against thrombogenicity and biofouling. The biomimetic surface is efficiently fabricated by cografting a NO-generating species (i.e., Tri-tert-butyl 1,4,7,10-Tetraazacyclododecane-1,4,7,10-tetraacetate-chelated Cu2+ , DTris@Cu) and the macromolecular HA on an aminated tube surface through one-pot amide condensation chemistry. The active attack (i.e., NO release) and zone defense (i.e., HA tethering) system endow the tubing surface with significant inhibition of platelets, fibrinogen, and bacteria adhesion, finally leading to long-term anti-thrombogenic and anti-fouling properties over 1 month. It is envisioned that this endothelium-mimicking surface engineering strategy will provide a promising solution to address the clinical issues of long-term blood-contacting devices associated with thrombosis and infection.
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Affiliation(s)
- Han Yu
- Key Laboratory of Advanced Technologies of Materials, Ministry of Education, School of Materials Science and Engineering, Yibin Institute of Southwest Jiaotong University, Southwest Jiaotong University, Chengdu, 610031, China
| | - Hua Qiu
- Key Laboratory of Advanced Technologies of Materials, Ministry of Education, School of Materials Science and Engineering, Yibin Institute of Southwest Jiaotong University, Southwest Jiaotong University, Chengdu, 610031, China
| | - Wenmei Ma
- Key Laboratory of Advanced Technologies of Materials, Ministry of Education, School of Materials Science and Engineering, Yibin Institute of Southwest Jiaotong University, Southwest Jiaotong University, Chengdu, 610031, China
| | - Manfred F Maitz
- Key Laboratory of Advanced Technologies of Materials, Ministry of Education, School of Materials Science and Engineering, Yibin Institute of Southwest Jiaotong University, Southwest Jiaotong University, Chengdu, 610031, China
- Max Bergmann Center of Biomaterials, Leibniz Institute of Polymer Research Dresden, Hohe Strasse 6, 01069, Dresden, Germany
| | - Qiufen Tu
- Key Laboratory of Advanced Technologies of Materials, Ministry of Education, School of Materials Science and Engineering, Yibin Institute of Southwest Jiaotong University, Southwest Jiaotong University, Chengdu, 610031, China
| | - Kaiqin Xiong
- Key Laboratory of Advanced Technologies of Materials, Ministry of Education, School of Materials Science and Engineering, Yibin Institute of Southwest Jiaotong University, Southwest Jiaotong University, Chengdu, 610031, China
| | - Jiang Chen
- Key Laboratory of Advanced Technologies of Materials, Ministry of Education, School of Materials Science and Engineering, Yibin Institute of Southwest Jiaotong University, Southwest Jiaotong University, Chengdu, 610031, China
| | - Nan Huang
- Key Laboratory of Advanced Technologies of Materials, Ministry of Education, School of Materials Science and Engineering, Yibin Institute of Southwest Jiaotong University, Southwest Jiaotong University, Chengdu, 610031, China
| | - Zhilu Yang
- Key Laboratory of Advanced Technologies of Materials, Ministry of Education, School of Materials Science and Engineering, Yibin Institute of Southwest Jiaotong University, Southwest Jiaotong University, Chengdu, 610031, China
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Abrantes J, Lopes AM. A Review on the Methods Used for the Detection and Diagnosis of Rabbit Hemorrhagic Disease Virus (RHDV). Microorganisms 2021; 9:972. [PMID: 33946292 PMCID: PMC8146303 DOI: 10.3390/microorganisms9050972] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2021] [Revised: 04/26/2021] [Accepted: 04/27/2021] [Indexed: 01/10/2023] Open
Abstract
Since the early 1980s, the European rabbit (Oryctolagus cuniculus) has been threatened by the rabbit hemorrhagic disease (RHD). The disease is caused by a lagovirus of the family Caliciviridae, the rabbit hemorrhagic disease virus (RHDV). The need for detection, identification and further characterization of RHDV led to the development of several diagnostic tests. Owing to the lack of an appropriate cell culture system for in vitro propagation of the virus, much of the methods involved in these tests contributed to our current knowledge on RHD and RHDV and to the development of vaccines to contain the disease. Here, we provide a comprehensive review of the RHDV diagnostic tests used since the first RHD outbreak and that include molecular, histological and serological techniques, ranging from simpler tests initially used, such as the hemagglutination test, to the more recent and sophisticated high-throughput sequencing, along with an overview of their potential and their limitations.
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Affiliation(s)
- Joana Abrantes
- CIBIO/InBio-UP, Centro de Investigação em Biodiversidade e Recursos Genéticos, Universidade do Porto, 4485-661 Vairão, Portugal;
- Departamento de Biologia, Faculdade de Ciências da Universidade do Porto, 4169-007 Porto, Portugal
| | - Ana M. Lopes
- CIBIO/InBio-UP, Centro de Investigação em Biodiversidade e Recursos Genéticos, Universidade do Porto, 4485-661 Vairão, Portugal;
- Instituto de Ciências Biomédicas Abel Salazar (ICBAS)/Unidade Multidisciplinar de Investigação Biomédica (UMIB), Universidade do Porto, 4050-313 Porto, Portugal
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Strive T, Piper M, Huang N, Mourant R, Kovaliski J, Capucci L, Cox TE, Smith I. Retrospective serological analysis reveals presence of the emerging lagovirus RHDV2 in Australia in wild rabbits at least five months prior to its first detection. Transbound Emerg Dis 2019; 67:822-833. [PMID: 31665828 DOI: 10.1111/tbed.13403] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2019] [Revised: 10/23/2019] [Accepted: 10/24/2019] [Indexed: 12/16/2022]
Abstract
The lagovirus rabbit haemorrhagic disease virus (RHDV) has been circulating in Australia since the mid-1990s when it was released to control overabundant rabbit populations. In recent years, the viral diversity of different RHDVs in Australia has increased, and currently four different types of RHDV are known to be circulating. To allow for ongoing epidemiological studies and impact assessments of these viruses on Australian wild rabbit populations, it is essential that serological tools are updated. To this end, reference sera were produced against all four virulent RHDVs (RHDV, RHDV2 and two different strains of RHDVa) known to be present in Australia and tested in a series of available immunological assays originally developed for the prototype RHDV, to assess patterns of cross-reactivity and the usefulness of these assays to detect lagovirus antibodies, either in a generic or specific manner. Enzyme-linked immunosorbent assays (ELISAs) developed to detect antibody isotypes IgM, IgA and IgG were sufficiently cross-reactive to detect antibodies raised against all four virulent lagoviruses. For the more specific detection of antibodies to the antigenically more different RHDV2, a competition ELISA was adapted using RHDV2-specific monoclonal antibodies in combination with Australian viral antigen. Archival serum banks from a long-term rabbit monitoring site where rabbits were sampled quarterly over a period of 6 years were re-screened using this assay and revealed serological evidence for the arrival of RHDV2 in this population at least 5 months prior to its initial detection in Australia in a dead rabbit in May 2015. The serological methods and reference reagents described here will provide valuable tools to study presence, prevalence and impact of RHDV2 on Australian rabbit populations; however, the discrimination of different antigenic variants of RHDVs as well as mixed infections at the serological level remains challenging.
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Affiliation(s)
- Tanja Strive
- Commonwealth Scientific and Industrial Research Organisation, Canberra, Australia.,Centre for Invasive Species Solutions, University of Canberra, Bruce, Australia
| | - Melissa Piper
- Commonwealth Scientific and Industrial Research Organisation, Canberra, Australia
| | - Nina Huang
- Commonwealth Scientific and Industrial Research Organisation, Canberra, Australia.,Centre for Invasive Species Solutions, University of Canberra, Bruce, Australia
| | - Roslyn Mourant
- Commonwealth Scientific and Industrial Research Organisation, Canberra, Australia
| | - John Kovaliski
- Department of Primary Industries and Regions, Biosecurity SA, Adelaide, Australia
| | - Lorenzo Capucci
- Istituto Zooprofilattico Sperimentale della Lombardia e dell'Emilia Romagna 'Bruno Ubertini' (IZSLER), OIE Reference Laboratory for Rabbit Haemorrhagic Disease, Brescia, Italy
| | - Tarnya E Cox
- Centre for Invasive Species Solutions, University of Canberra, Bruce, Australia.,Vertebrate Pest Research Unit, New South Wales Department of Primary Industries, Orange, Australia
| | - Ina Smith
- Commonwealth Scientific and Industrial Research Organisation, Canberra, Australia
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Rosell JM, de la Fuente LF, Parra F, Dalton KP, Badiola Sáiz JI, Pérez de Rozas A, Badiola Díez JJ, Fernández de Luco D, Casal J, Majó N, Casas J, Garriga R, Fernández Magariños XM. Myxomatosis and Rabbit Haemorrhagic Disease: A 30-Year Study of the Occurrence on Commercial Farms in Spain. Animals (Basel) 2019; 9:E780. [PMID: 31658748 PMCID: PMC6827050 DOI: 10.3390/ani9100780] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2019] [Revised: 10/01/2019] [Accepted: 10/01/2019] [Indexed: 01/25/2023] Open
Abstract
In this retrospective study, we describe the relative occurrence of clinical myxomatosis, and rabbit haemorrhagic disease (RHD), on 1714 commercial farms visited in Spain, between 1988 and 2018. We determined the annual prevalence based on 817 visits to 394 farms affected by myxomatosis. Myxomatosis was more prevalent from August to March, being lowest in June (3%) and highest in September (8.9%). With regard to RHD, we assessed 253 visits to 156 affected farms. We analyzed mean annual and monthly incidence. Two important RHD epidemics occurred; the first in 1988-1989 due to RHDV GI.1 (also known as RHDV), and the second from 2011 to 2013 due to RHDV GI.2 (RHDV2 or RHDVb). These epidemics occurred at times when effective vaccination had not been carried out. Relative monthly incidence in 2011-2018 was higher from April to August (p < 0.001). The results we obtained from 1404 necropsies on 102 farms did not clearly relate serosanguinous nasal discharge in rabbits with disease caused by GI.2 infection. We also assessed vaccination schedules used on 200 doe farms visited from the end of 2014 to 2018; 95.5% vaccinated against myxomatosis and 97.5% against RHD. Both diseases remain prevalent; however, effective vaccination has produced a steady decline in myxomatosis and RHDV GI.1 and GI.2 on-farm detection. The maintenance of high hygienic standards will be needed to continue and improve this control. However, further studies are required to investigate the causes of sustained virus presence and vaccine breaks.
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Affiliation(s)
- Joan M Rosell
- Cunivet Service. P.O. Box 518, 43080 Tarragona, Spain.
| | - L Fernando de la Fuente
- Departamento de Producción Animal, Facultad de Veterinaria, Avda. Profesor Pedro Cármenes s/n, Universidad de León, 24071 León, Spain.
| | - Francisco Parra
- Instituto Universitario de Biotecnología de Asturias, Departamento de Bioquímica y Biología Molecular, Universidad de Oviedo, Calle Doctor Fernando Bongera s/n, 33006 Oviedo, Spain.
| | - Kevin P Dalton
- Instituto Universitario de Biotecnología de Asturias, Departamento de Bioquímica y Biología Molecular, Universidad de Oviedo, Calle Doctor Fernando Bongera s/n, 33006 Oviedo, Spain.
| | - J Ignacio Badiola Sáiz
- Institut de Recerca i Tecnologia Agroalimentàries (IRTA)-Centre de Recerca en Sanitat Animal (CReSA), Campus de la Universitat Autónoma de Barcelona, 08193 Cerdanyola del Vallés (Barcelona), Spain.
| | - Ana Pérez de Rozas
- Institut de Recerca i Tecnologia Agroalimentàries (IRTA)-Centre de Recerca en Sanitat Animal (CReSA), Campus de la Universitat Autónoma de Barcelona, 08193 Cerdanyola del Vallés (Barcelona), Spain.
| | - Juan J Badiola Díez
- Departamento de Patología Animal, Facultad de Veterinaria, Universidad de Zaragoza, Calle de Miguel Servet, 177, 50013 Zaragoza, Spain.
| | - Daniel Fernández de Luco
- Departamento de Patología Animal, Facultad de Veterinaria, Universidad de Zaragoza, Calle de Miguel Servet, 177, 50013 Zaragoza, Spain.
| | - Jordi Casal
- Institut de Recerca i Tecnologia Agroalimentàries (IRTA)-Centre de Recerca en Sanitat Animal (CReSA), Campus de la Universitat Autónoma de Barcelona, 08193 Cerdanyola del Vallés (Barcelona), Spain.
- Departament de Sanitat i Anatomia Animals, Facultat de Veterinària, Universitat Autónoma de Barcelona, 08193 Cerdanyola del Vallés (Barcelona), Spain.
| | - Natàlia Majó
- Institut de Recerca i Tecnologia Agroalimentàries (IRTA)-Centre de Recerca en Sanitat Animal (CReSA), Campus de la Universitat Autónoma de Barcelona, 08193 Cerdanyola del Vallés (Barcelona), Spain.
- Departament de Sanitat i Anatomia Animals, Facultat de Veterinària, Universitat Autónoma de Barcelona, 08193 Cerdanyola del Vallés (Barcelona), Spain.
| | - Jordina Casas
- Federació d'Associacions de Cunicultors de Catalunya (FACC). Carrer Ull de Llebre, 13 08734 Olèrdola (Barcelona), Spain.
| | - Ricard Garriga
- Federació d'Associacions de Cunicultors de Catalunya (FACC). Carrer Ull de Llebre, 13 08734 Olèrdola (Barcelona), Spain.
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Immunogenicity in Rabbits of Virus-Like Particles from a Contemporary Rabbit Haemorrhagic Disease Virus Type 2 (GI.2/RHDV2/b) Isolated in The Netherlands. Viruses 2019; 11:v11060553. [PMID: 31207978 PMCID: PMC6631637 DOI: 10.3390/v11060553] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2019] [Revised: 06/08/2019] [Accepted: 06/11/2019] [Indexed: 11/24/2022] Open
Abstract
Rabbit haemorrhagic disease virus (RHDV) type 2 (GI.2/RHDV2/b) is an emerging pathogen in wild rabbits and in domestic rabbits vaccinated against RHDV (GI.1). Here we report the genome sequence of a contemporary RHDV2 isolate from the Netherlands and investigate the immunogenicity of virus-like particles (VLPs) produced in insect cells. RHDV2 RNA was isolated from the liver of a naturally infected wild rabbit and the complete viral genome sequence was assembled from sequenced RT-PCR products. Phylogenetic analysis based on the VP60 capsid gene demonstrated that the RHDV2 NL2016 isolate clustered with other contemporary RHDV2 strains. The VP60 gene was cloned in a baculovirus expression vector to produce VLPs in Sf9 insect cells. Density-gradient purified RHDV2 VLPs were visualized by transmission electron microscopy as spherical particles of around 30 nm in diameter with a morphology resembling authentic RHDV. Immunization of rabbits with RHDV2 VLPs resulted in high production of serum antibodies against VP60, and the production of cytokines (IFN-γ and IL-4) was significantly elevated in the immunized rabbits compared to the control group. The results demonstrate that the recombinant RHDV2 VLPs are highly immunogenic and may find applications in serological detection assays and might be further developed as a vaccine candidate to protect domestic rabbits against RHDV2 infection.
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9
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Dalton KP, Balseiro A, Juste RA, Podadera A, Nicieza I, Del Llano D, González R, Martin Alonso JM, Prieto JM, Parra F, Casais R. Clinical course and pathogenicity of variant rabbit haemorrhagic disease virus in experimentally infected adult and kit rabbits: Significance towards control and spread. Vet Microbiol 2018; 220:24-32. [PMID: 29885797 DOI: 10.1016/j.vetmic.2018.04.033] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2018] [Revised: 04/27/2018] [Accepted: 04/28/2018] [Indexed: 01/08/2023]
Abstract
RHDVb has become the dominant RHDV on the Iberian Peninsula. A better understanding of its pathogenicity is required to aid control measures. Thus, the clinical course, humoral immune response, viraemia and kinetics of RHDV-N11 (a Spanish RHDVb isolate) infection in different tissues at both viral RNA and protein levels were studied in experimentally infected young and adult rabbits. The case fatality rate differed between the two age groups, with 21% of kits succumbing while no deaths were observed in adults. Fever and viremia were strongly associated with death, which occurred 48 h post infection (PI) too fast for an effective humoral immune response to be mounted. A significant effect on the number of viral RNA copies with regard to the variables age, tissue and time PI (p < 0.0001 in all cases) was detected. Histological lesions in infected rabbits were consistently more frequent and severe in liver and spleen and additionally intestine in kits, these tissues containing the highest levels of viral RNA and protein. Although no adults showed lesions or virus antigen in intestine, both kits and adults maintained steady viral RNA levels from days 1 to 7 PI in this organ. Analysis revealed the fecal route as the main dissemination route of RHDV-N11. Subclinically infected rabbits had detectable viral RNA in their faeces for up to seven days and thus may play an important role spreading the virus. This study allows a better understanding of the transmission of this virus and improvement of the control strategies for this disease.
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Affiliation(s)
- K P Dalton
- Instituto Universitario de Biotecnología de Asturias, Departamento de Bioquímica y Biología Molecular, Edificio Santiago Gascón, Universidad de Oviedo, Campus El Cristo, 33006, Oviedo, Spain.
| | - A Balseiro
- SERIDA, Servicio Regional de Investigación y Desarrollo Agroalimentario (SERIDA), Centro de Biotecnología Animal, 33394, Gijón, Asturias, Spain.
| | - R A Juste
- SERIDA, Servicio Regional de Investigación y Desarrollo Agroalimentario (SERIDA), Centro de Biotecnología Animal, 33394, Gijón, Asturias, Spain.
| | - A Podadera
- Instituto Universitario de Biotecnología de Asturias, Departamento de Bioquímica y Biología Molecular, Edificio Santiago Gascón, Universidad de Oviedo, Campus El Cristo, 33006, Oviedo, Spain.
| | - I Nicieza
- Instituto Universitario de Biotecnología de Asturias, Departamento de Bioquímica y Biología Molecular, Edificio Santiago Gascón, Universidad de Oviedo, Campus El Cristo, 33006, Oviedo, Spain.
| | - D Del Llano
- Instituto Universitario de Biotecnología de Asturias, Departamento de Bioquímica y Biología Molecular, Edificio Santiago Gascón, Universidad de Oviedo, Campus El Cristo, 33006, Oviedo, Spain.
| | - R González
- SERIDA, Servicio Regional de Investigación y Desarrollo Agroalimentario (SERIDA), Centro de Biotecnología Animal, 33394, Gijón, Asturias, Spain.
| | - J M Martin Alonso
- Instituto Universitario de Biotecnología de Asturias, Departamento de Bioquímica y Biología Molecular, Edificio Santiago Gascón, Universidad de Oviedo, Campus El Cristo, 33006, Oviedo, Spain.
| | - J M Prieto
- SERIDA, Servicio Regional de Investigación y Desarrollo Agroalimentario (SERIDA), Centro de Biotecnología Animal, 33394, Gijón, Asturias, Spain.
| | - F Parra
- Instituto Universitario de Biotecnología de Asturias, Departamento de Bioquímica y Biología Molecular, Edificio Santiago Gascón, Universidad de Oviedo, Campus El Cristo, 33006, Oviedo, Spain.
| | - R Casais
- SERIDA, Servicio Regional de Investigación y Desarrollo Agroalimentario (SERIDA), Centro de Biotecnología Animal, 33394, Gijón, Asturias, Spain.
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