[Age factor of the sero-immunity of poliomyelitis viruses and ECHO virus type 9].
D000367:Age Factors; D004459:Echovirus 9; D006801:Humans; D007109:Immunity; D011051:Poliomyelitis; D017955:Poliovirus / Q000276:immunology*; D014780:Viruses / Q000276:immunology*
POLIOMYELITIS VIRUS/immunology; VIRUSES/immunology
Studie zur Altersabhängigkeit der Seroimmunität gegen die Poliomyelitisviren und das ECHO-Virus Typ 9.