The present study was undertaken to develop a BHK 21 cell culture adapted Peste des petits ruminants (PPR) virus vaccine. The PPR vaccine virus AR 87 adapted in Vero cell line monolayer was propagated in BHK 21 cell line monolayer and BHK 21 suspension cell line (Razi, Indian Immounological, Hyderabad) by giving fifteen and five serial passages respectively. T...