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Kim TH, Park JY, Jung J, Sung JS, Kwon S, Bae HE, Shin HJ, Kang MJ, Jose J, Pyun JC. A one-step immunoassay based on switching peptides for diagnosis of porcine epidemic diarrhea virus (PEDV) using screened Fv-antibodies. J Mater Chem B 2024; 12:3751-3763. [PMID: 38532694 DOI: 10.1039/d4tb00066h] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/28/2024]
Abstract
In this study, a one-step immunoassay for porcine epidemic diarrhea virus (PEDV) based on Fv-antibodies and switching peptides was developed, and the assay results of PEDV were obtained by just mixing samples without any further reaction or washing steps. The Fv-antibodies with binding affinity to the spike protein of PEDV were screened from the Fv-antibody library using the receptor-binding domain (RBD) of the spike protein as a screening probe. Screened Fv-antibodies with binding affinities to the RBD antigen were expressed, and the binding constants (KD) were calculated to be 83-142 nM. The one-step immunoassay for the detection of PEDV was configured as a displacement immunoassay using a fluorescence-labeled switching peptide. The one-step immunoassay based on switching peptides was performed using PEDV, and the limit of detection (LOD) values for PEDV detection were estimated to be Ct = 39.7-36.4. Compared with the LOD value for a conventional lateral flow immunoassay (Ct = 33.0), the one-step immunoassay showed a remarkably improved LOD for the detection of PEDV. Finally, the interaction between the screened Fv-antibodies and the PEDV RBD was investigated using docking simulations and compared with the amino acid sequences of the receptors on host cells, such as aminopeptidase N (APN) and angiotensin-converting enzyme-2 (ACE-2).
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Affiliation(s)
- Tae-Hun Kim
- Department of Materials Science and Engineering, Yonsei University, 50 Yonsei-Ro, Seodaemun-Gu, Seoul 03722, Korea.
| | - Jae-Yeon Park
- College of Veterinary Medicine, Chungnam National University, Daejeon, 34134, South Korea
| | - Jaeyong Jung
- Department of Materials Science and Engineering, Yonsei University, 50 Yonsei-Ro, Seodaemun-Gu, Seoul 03722, Korea.
| | - Jeong Soo Sung
- Department of Materials Science and Engineering, Yonsei University, 50 Yonsei-Ro, Seodaemun-Gu, Seoul 03722, Korea.
| | - Soonil Kwon
- Department of Materials Science and Engineering, Yonsei University, 50 Yonsei-Ro, Seodaemun-Gu, Seoul 03722, Korea.
| | - Hyung Eun Bae
- Department of Materials Science and Engineering, Yonsei University, 50 Yonsei-Ro, Seodaemun-Gu, Seoul 03722, Korea.
| | - Hyun-Jin Shin
- College of Veterinary Medicine, Chungnam National University, Daejeon, 34134, South Korea
| | - Min-Jung Kang
- Korea Institute of Science and Technology (KIST), Seoul, Korea
| | - Joachim Jose
- Institute of Pharmaceutical and Medical Chemistry, Westfälischen Wilhelms-Universität Münster, Muenster, Germany
| | - Jae-Chul Pyun
- Department of Materials Science and Engineering, Yonsei University, 50 Yonsei-Ro, Seodaemun-Gu, Seoul 03722, Korea.
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Lv Q, Jiang PY, Xia JM, Liang LH, Chen B, Yang Y, Yan L, Yu HL, Liu CC. Discriminative detection of soman or VX exposure using europium chelated microparticle-based immunofluorescence microfluidic chip. Anal Biochem 2024; 685:115388. [PMID: 37967783 DOI: 10.1016/j.ab.2023.115388] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2023] [Revised: 10/26/2023] [Accepted: 11/05/2023] [Indexed: 11/17/2023]
Abstract
The retrospective detection of organophosphorus nerve agents (OPNAs) exposure has been achieved by the off-site analysis of OPNA-human serum albumin (HSA) adducts using mass spectrometry-based detection approaches. However, few specific methods are accessible for on-site detection. To address this, a novel immunofluorescence microfluidic chip (IFMC) testing system combining europium chelated microparticle (EuCM) with self-driven microfluidic chip assay has been established to unambiguously determine soman (GD) and VX exposure within 20 min, respectively. The detection system was based on the principle of indirect competitive enzyme-linked immunosorbent assay. The specific monoclonal antibodies that respectively recognized the phosphonylated tyrosine 411 of GD-HSA and VX-HSA adducts were labeled by EuCM to capture corresponding adducts in the exposed samples. The phosphonylated peptides in the test line and goat-anti-rabbit antibody in the control line were utilized to bind the EuCM-labeled antibodies for signal exhibition. The developed IFMC chip could discriminatively detect exposed HSA adducts with high specificity, demonstrating a low limit of detection at exposure concentrations of 0.5 × 10-6 mol/L VX and 1.0 × 10-6 mol/L GD. The exposed serum samples can be qualitatively detected following an additional pretreatment procedure. This is a novel rapid detection system capable of discriminating GD and VX exposure, providing an alternative method for rapidly identifying OPNA exposure.
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Affiliation(s)
- Qiao Lv
- State Key Laboratory of NBC Protection for Civilian, Beijing, 102205, China
| | - Pei-Yu Jiang
- State Key Laboratory of NBC Protection for Civilian, Beijing, 102205, China
| | - Jun-Mei Xia
- State Key Laboratory of NBC Protection for Civilian, Beijing, 102205, China
| | - Long-Hui Liang
- State Key Laboratory of NBC Protection for Civilian, Beijing, 102205, China
| | - Bo Chen
- State Key Laboratory of NBC Protection for Civilian, Beijing, 102205, China
| | - Yang Yang
- State Key Laboratory of NBC Protection for Civilian, Beijing, 102205, China
| | - Long Yan
- State Key Laboratory of NBC Protection for Civilian, Beijing, 102205, China
| | - Hui-Lan Yu
- State Key Laboratory of NBC Protection for Civilian, Beijing, 102205, China.
| | - Chang-Cai Liu
- State Key Laboratory of NBC Protection for Civilian, Beijing, 102205, China.
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Pang J, Tian X, Han X, Yuan J, Li L, You Y, Zhou Y, Xing G, Li R, Wang Z. Computationally-driven epitope identification of PEDV N-protein and its application in development of immunoassay for PEDV detection. J Pharm Biomed Anal 2023; 235:115660. [PMID: 37598469 DOI: 10.1016/j.jpba.2023.115660] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2023] [Revised: 08/16/2023] [Accepted: 08/16/2023] [Indexed: 08/22/2023]
Abstract
The nucleocapsid (N) protein is a suitable candidate for early diagnosis of porcine epidemic diarrhea virus (PEDV). Here, we identified the linear B-cell epitopes of the PEDV N-protein by integrating a computational-experimental framework and constructed three-dimensional (3D) structure model of the N protein using the ColabFold program in Google Colaboratory. Furthermore, we prepared the monoclonal antibodies against the predicted epitopes and recombinant N protein, respectively, and selected pairing mAbs (named 9C4 and 3C5) to develop a double-antibody sandwich immunochromatographic test strip using CdSe/ZnS quantum dots (QDs)-labelled 9C4 and 3C5 as capture and detection antibodies, respectively. This strip can specifically detect PEDV within 10 min with a detection limit of less than 6.25 × 103 TCID50/mL. In comparison with RT-PCR for testing 90 clinical samples, the relative sensitivity and specificity of the strip were found to be 98.0% and 100%, respectively, with a concordance rate of 98.9% and a kappa value of 0.978, indicating that QDs-ICTS is a reliable method for the application of PEDV detection in clinical samples.
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Affiliation(s)
- Junzeng Pang
- College of Animal Science and Veterinary Medicine, Henan Institute of Science and Technology, Xinxiang 453003, China
| | - Xiangqin Tian
- Henan Key Laboratory of Medical Tissue Regeneration, Xinxiang Medical University, Xinxiang 453003, China
| | - Xiao Han
- College of Animal Science and Veterinary Medicine, Henan Institute of Science and Technology, Xinxiang 453003, China
| | - Jiakang Yuan
- College of Animal Science and Veterinary Medicine, Henan Institute of Science and Technology, Xinxiang 453003, China
| | - Linyue Li
- College of Animal Science and Veterinary Medicine, Henan Institute of Science and Technology, Xinxiang 453003, China
| | - Yonghe You
- Sanquan College of Xinxiang Medical University, Xinxiang 453000, China
| | - Yanlin Zhou
- Sanquan College of Xinxiang Medical University, Xinxiang 453000, China
| | - Guangxu Xing
- Key Laboratory of Animal Immunology of the Ministry of Agriculture, Henan Provincial Key Laboratory of Animal Immunology, Henan Academy of Agricultural Sciences, Zhengzhou 450002, China
| | - Renfeng Li
- College of Animal Science and Veterinary Medicine, Henan Institute of Science and Technology, Xinxiang 453003, China.
| | - Ziliang Wang
- College of Animal Science and Veterinary Medicine, Henan Institute of Science and Technology, Xinxiang 453003, China
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Aira C, Monedero A, Hernández-Antón S, Martínez-Cano J, Camuñas A, Casado N, Nieto R, Gallardo C, García-Durán M, Rueda P, Fresco-Taboada A. Improving African Swine Fever Surveillance Using Fluorescent Rapid Tests. Pathogens 2023; 12:811. [PMID: 37375501 DOI: 10.3390/pathogens12060811] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2023] [Revised: 06/02/2023] [Accepted: 06/05/2023] [Indexed: 06/29/2023] Open
Abstract
African swine fever (ASF) is a viral disease of swine with a huge impact due to its high mortality. Lately, the disease has actively spread around the world, affecting new areas from which it had been eradicated long ago. To date, ASF control is carried out by the implementation of strict biosecurity measures such as the early identification of infected animals. In this work, two fluorescent rapid tests were developed to improve the sensitivity of point-of-care diagnosis of ASF. For antigen (Ag) detection in blood, a double-antibody sandwich fluorescent lateral flow assay (LFA) was developed, employing a newly developed recombinant antibody to the VP72 of the virus. To complement the diagnosis, a double-recognition fluorescent LFA was developed using the VP72 for the detection of specific antibodies (Ab) in sera or blood. Both assays statistically improved the detection of the disease when compared to the commercial colorimetric assays INgezim® ASFV CROM Ag and INgezim® PPA CROM Anticuerpo, respectively, with higher statistical significance between 11 and 39 days post-infection. From the observation of results, it can be concluded that the combination of both Ag-LFA and Ab-LFA assays would facilitate the identification of infected animals, regardless of post-infection time.
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Affiliation(s)
- Cristina Aira
- Gold Standard Diagnostics Madrid (GSD Madrid), Calle de los Hermanos García Noblejas 39, 28037 Madrid, Spain
| | - Alejandro Monedero
- Gold Standard Diagnostics Madrid (GSD Madrid), Calle de los Hermanos García Noblejas 39, 28037 Madrid, Spain
| | - Sonia Hernández-Antón
- Gold Standard Diagnostics Madrid (GSD Madrid), Calle de los Hermanos García Noblejas 39, 28037 Madrid, Spain
| | - Juan Martínez-Cano
- Gold Standard Diagnostics Madrid (GSD Madrid), Calle de los Hermanos García Noblejas 39, 28037 Madrid, Spain
| | - Ana Camuñas
- Gold Standard Diagnostics Madrid (GSD Madrid), Calle de los Hermanos García Noblejas 39, 28037 Madrid, Spain
| | - Nadia Casado
- European Union Reference Laboratory for ASF, Centro de Investigación en Sanidad Animal (CISA-INIA/CSIC), Carretera Algete-El Casar de Talamanca, Km. 8.1, 28130 Madrid, Spain
| | - Raquel Nieto
- European Union Reference Laboratory for ASF, Centro de Investigación en Sanidad Animal (CISA-INIA/CSIC), Carretera Algete-El Casar de Talamanca, Km. 8.1, 28130 Madrid, Spain
| | - Carmina Gallardo
- European Union Reference Laboratory for ASF, Centro de Investigación en Sanidad Animal (CISA-INIA/CSIC), Carretera Algete-El Casar de Talamanca, Km. 8.1, 28130 Madrid, Spain
| | - Marga García-Durán
- Gold Standard Diagnostics Madrid (GSD Madrid), Calle de los Hermanos García Noblejas 39, 28037 Madrid, Spain
| | - Paloma Rueda
- Gold Standard Diagnostics Madrid (GSD Madrid), Calle de los Hermanos García Noblejas 39, 28037 Madrid, Spain
| | - Alba Fresco-Taboada
- Gold Standard Diagnostics Madrid (GSD Madrid), Calle de los Hermanos García Noblejas 39, 28037 Madrid, Spain
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Li R, Tian X, Pang J, Li L, Yuan J, Tian Z, Wang Z. Point-of-Care Tests for Rapid Detection of Porcine Epidemic Diarrhea Virus: A Systematic Review and Meta-Analysis. Viruses 2022; 14:v14071355. [PMID: 35891337 PMCID: PMC9321219 DOI: 10.3390/v14071355] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2022] [Revised: 06/07/2022] [Accepted: 06/17/2022] [Indexed: 12/21/2022] Open
Abstract
The timely and accurate diagnosis of porcine epidemic diarrhea virus (PEDV) infection is crucial to reduce the risk of viral transmission. Therefore, the objective of this review was to evaluate the overall diagnostic accuracy of rapid point-of-care tests (POCTs) for PEDV. Studies published before 7 January 2022 were identified by searching PubMed, EMBASE, Springer Link, and Web of Science databases, using subject headings or keywords related to point of care and rapid test diagnostic for PEDV and PED. Two investigators independently extracted data, rated risk of bias, and assessed the quality using the Quality Assessment of Diagnostic Accuracy Studies-2 tool. The bivariate model and the hierarchical summary receiver operating characteristic (HSROC) model were used for performing the meta-analysis. Threshold effect, subgroup analysis, and meta-regression were applied to explore heterogeneity. Of the 2908 records identified, 24 eligible studies involving 3264 specimens were enrolled in the meta-analysis, including 11 studies on evaluation of lateral flow immunochromatography assay (ICA)-based, and 13 on nucleic acid isothermal amplification (NAIA)-based POCTs. The overall pooled sensitivity, specificity and diagnostic odds ratio (DOR) were 0.95 (95% CI: 0.92–0.97), 0.96 (95% CI 0.88–0.99) and 480 (95% CI 111–2074), respectively; for ICA-based POCTs and the corresponding values for NAIA-based, POCTs were 0.97 (95% CI 0.94–0.99), 0.98 (95% CI 0.91–0.99) and 1517 (95% CI 290–7943), respectively. The two tests showed highly comparable and satisfactory diagnostic performance in clinical utility. These results support current recommendations for the use of rapid POC tests when PEDV is suspected.
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Affiliation(s)
- Renfeng Li
- College of Animal Science and Veterinary Medicine, Henan Institute of Science and Technology, Xinxiang 453003, China; (R.L.); (J.P.); (L.L.); (J.Y.); (Z.W.)
| | - Xiangqin Tian
- Henan Key Laboratory of Medical Tissue Regeneration, Xinxiang Medical University, Xinxiang 453003, China
- Correspondence:
| | - Junzeng Pang
- College of Animal Science and Veterinary Medicine, Henan Institute of Science and Technology, Xinxiang 453003, China; (R.L.); (J.P.); (L.L.); (J.Y.); (Z.W.)
| | - Linyue Li
- College of Animal Science and Veterinary Medicine, Henan Institute of Science and Technology, Xinxiang 453003, China; (R.L.); (J.P.); (L.L.); (J.Y.); (Z.W.)
| | - Jiakang Yuan
- College of Animal Science and Veterinary Medicine, Henan Institute of Science and Technology, Xinxiang 453003, China; (R.L.); (J.P.); (L.L.); (J.Y.); (Z.W.)
| | - Zhuangzhuang Tian
- School of International Education, Xinxiang Medical University, Xinxiang 453003, China;
| | - Ziliang Wang
- College of Animal Science and Veterinary Medicine, Henan Institute of Science and Technology, Xinxiang 453003, China; (R.L.); (J.P.); (L.L.); (J.Y.); (Z.W.)
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Danthanarayana AN, Brgoch J, Willson RC. Photoluminescent Molecules and Materials as Diagnostic Reporters in Lateral Flow Assays. ACS APPLIED BIO MATERIALS 2022; 5:82-96. [PMID: 35014811 PMCID: PMC9798899 DOI: 10.1021/acsabm.1c01051] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
The lateral flow assay (LFA) is a point-of-care diagnostic test commonly available in an over-the-counter format because of its simplicity, speed, low cost, and portability. The reporter particles in these assays are among their most significant components because they perform the diagnostic readout and dictate the test's sensitivity. Today, gold nanoparticles are frequently used as reporters, but recent work focusing on photoluminescent-based reporter technologies has pushed LFAs to better performance. These efforts have focused specifically on reporters made of organic fluorophores, quantum dots, lanthanide chelates, persistent luminescent phosphors, and upconversion phosphors. In most cases, photoluminescent reporters show enhanced sensitivity compared to conventional gold nanoparticle-based assays. Here, we examine the advantages and disadvantages of these different reporters and highlight their potential benefits in LFAs. Our assessment shows that photoluminescent-based LFAs can not only reach lower detection limits than LFAs with traditional reporters, but they also can be capable of quantitative and multiplex analyte detection. As a result, the photoluminescent reporters make LFAs well-suited for medical diagnostics, the food and agricultural industry, and environmental testing.
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Affiliation(s)
| | - Jakoah Brgoch
- Department of Chemistry, University of Houston, Houston, Texas 77204, USA
| | - Richard C. Willson
- Department of Chemical and Biomolecular Engineering, University of Houston, Houston, Texas 77204, USA,Department of Biology and Biochemistry, University of Houston, Houston, Texas 77204, USA
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Wang Y, Wang B, Xu D, Zhang M, Zhang X, Wang D. Development of a ladder-shape melting temperature isothermal amplification (LMTIA) assay for detection of African swine fever virus (ASFV). J Vet Sci 2022; 23:e51. [PMID: 35698807 PMCID: PMC9346532 DOI: 10.4142/jvs.22001] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/01/2022] [Revised: 03/31/2022] [Accepted: 04/12/2022] [Indexed: 12/05/2022] Open
Abstract
Background Due to the unavailability of an effective vaccine or antiviral drug against the African swine fever virus (ASFV), rapid diagnosis methods are needed to prevent highly contagious African swine fever. Objectives The objective of this study was to establish the ladder-shape melting temperature isothermal amplification (LMTIA) assay for the detection of ASFV. Methods LMTIA primers were designed with the p72 gene of ASFV as the target, and plasmid pUC57 was used to clone the gene. The LMTIA reaction system was optimized with the plasmid as the positive control, and the performance of the LMTIA assay was compared with that of the commercial real-time polymerase chain reaction (PCR) kit in terms of sensitivity and detection rate using 200 serum samples. Results Our results showed that the LMTIA assay could detect the 104 dilution of DNA extracted from the positive reference serum sample, which was the same as that of the commercial real-time PCR kit. The coincidence rate between the two assays was 100%. Conclusions The LMTIA assay had high sensitivity, good detection, and simple operation. Thus, it is suitable for facilitating preliminary and cost-effective surveillance for the prevention and control of ASFV.
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Affiliation(s)
- Yongzhen Wang
- Key Laboratory of Biomarker Based Rapid-Detection Technology for Food Safety of Henan Province, Xuchang University, Xuchang 461000, China
| | - Borui Wang
- School of Food and Biological Engineering, Henan University of Science and Technology, Luoyang 471000, China
| | - Dandan Xu
- School of Food and Biological Engineering, Henan University of Science and Technology, Luoyang 471000, China
| | - Meng Zhang
- School of Food and Biological Engineering, Henan University of Science and Technology, Luoyang 471000, China
| | - Xiaohua Zhang
- Key Laboratory of Biomarker Based Rapid-Detection Technology for Food Safety of Henan Province, Xuchang University, Xuchang 461000, China
| | - Deguo Wang
- Key Laboratory of Biomarker Based Rapid-Detection Technology for Food Safety of Henan Province, Xuchang University, Xuchang 461000, China
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Parkhe P, Verma S. Evolution, Interspecies Transmission, and Zoonotic Significance of Animal Coronaviruses. Front Vet Sci 2021; 8:719834. [PMID: 34738021 PMCID: PMC8560429 DOI: 10.3389/fvets.2021.719834] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2021] [Accepted: 09/07/2021] [Indexed: 12/18/2022] Open
Abstract
Coronaviruses are single-stranded RNA viruses that affect humans and a wide variety of animal species, including livestock, wild animals, birds, and pets. These viruses have an affinity for different tissues, such as those of the respiratory and gastrointestinal tract of most mammals and birds and the hepatic and nervous tissues of rodents and porcine. As coronaviruses target different host cell receptors and show divergence in the sequences and motifs of their structural and accessory proteins, they are classified into groups, which may explain the evolutionary relationship between them. The interspecies transmission, zoonotic potential, and ability to mutate at a higher rate and emerge into variants of concern highlight their importance in the medical and veterinary fields. The contribution of various factors that result in their evolution will provide better insight and may help to understand the complexity of coronaviruses in the face of pandemics. In this review, important aspects of coronaviruses infecting livestock, birds, and pets, in particular, their structure and genome organization having a bearing on evolutionary and zoonotic outcomes, have been discussed.
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Affiliation(s)
| | - Subhash Verma
- Department of Veterinary Microbiology, DGCN College of Veterinary and Animal Sciences, Chaudhary Sarwan Kumar Himachal Pradesh Krishi Vishvavidyalaya, Palampur, India
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