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APA Citation
Liu, H., Ma, K., Liu, M., Yang, C., Huang, X., Zhao, Y., & Qi, K. (n.d.). histologic findings and viral antigen distribution in natural coinfection of layer hens with subgroup J avian leukosis virus, Marek's disease virus, and reticuloendotheliosis virus. Journal of veterinary diagnostic investigation, 31, 761–765. http://access.bl.uk/ark:/81055/vdc_100087611088.0x000030