DELAYED APPEARANCE OF TRANSFORMED CELLS IN POLYOMA  VIRUS-INFECTED MOUSE EMBRYO CULTURES.
D000818:Animals; D004622:Embryo, Mammalian; D004625:Embryo, Nonmammalian; D051379:Mice; D011120:Polyomavirus; D014776:Virus Cultivation
EMBRYO; POLYOMA VIRUS; VIRUS CULTIVATION