TY - JOUR T1 - Observation on Viral Variation and Vaccine Development in Marek’s Disease in China AU - Gong, Zhenhua AU - Wang, Liping AU - Hu, Yonghao AU - Lu, Ping AU - Zhang, Lijuan AU - Li, Weihua JO - Journal of Animal and Veterinary Advances VL - 11 IS - 24 SP - 4611 EP - 4614 PY - 2012 DA - 2001/08/19 SN - 1680-5593 DO - javaa.2012.4611.4614 UR - https://makhillpublications.co/view-article.php?doi=javaa.2012.4611.4614 KW - vaccine KW -viral variation KW -Marek`s disease KW -epidemic KW -evolution AB - Marek’s Disease (MD) is one of the main infectious diseases that threaten the healthy development of the Chinese poultry industry. The evolution of epidemic strains of the MD Virus (MDV) in China is different from the evolution of strains overseas. The meq gene sequence of pathogenic strains is different from that of the attenuated vaccine strain (MDV-1). The meq and L-meq gene sequences of the MDV in the lymphoid tissue of chickens in latency period are homologous. The meq gene was only found in the lymphoid tissue of chickens during the onset period. ER -