[On the absence in French vaccine of the vacuolating agent (SV40 virus)].
D005006:Ethnicity; D006801:Humans; D011051:Poliomyelitis / Q000276:immunology*; D013539:Simian virus 40; D014612:Vaccines; D014780:Viruses
D014612:Vaccines
POLIOMYELITIS/immunology; VACCINES; VIRUSES