nasopharyngeal epithelial cells ( npec ) were collected from 144 infants and children with respiratory syncytial virus ( rsv ) infection , and were analyzed by fluorescent antibody techniques for the presence of cell-bound complement ( c ' 3 ) , iga , igg , and igm class of immunoglobulins ( ig ) , and respiratory syncytial virus antigen .
C0021270
infants
C0008059
children