addition of the tumor promoter 12-0-tetradecanoyl-phorbol-13-acetate ( tpa ) to the growth medium of certain human cell cultures persistently infected with simian retroviruses of type c ( baev , ssv ) or type d ( mpmv ) or a human cell line-derived type d isolate ( pmfv ) , respectively , resulted in a considerable but transient stimulation of virus production .
C0751995
ssv
C0086418
human