[Persistence of virus ECHO 9 antibodies in former sick persons & their presence in normal subjects].
D004459:Echovirus 9; D006801:Humans; D014780:Viruses / Q000276:immunology*
VIRUSES/immunology
La persistance des anticorps anti-virus echo 9, chez d'anciens malades, et leur présence chez des sujets sains.