TY - RPRT TI - Immunization against Marek's disease using a live attenuated virus. AU - A E Churchill AU - L N Payne AU - R C Chubb PY - 1969 DO - 10.1038/221744a0 UR - https://pubmed.ncbi.nlm.nih.gov/4304053/ ID - 4304053 ER -