in the course of experiments on virus isolations from feces of normal children , as well as in studies of isolates from animals and from tissue cultures , data accrued which suggested that some conditionally pathogenic and some completely nonpathogenic strains of enteroviruses may provide some benefit to their host by inhibition of pathogenic viruses and by activating nonspecific protective functions of the organism .
C0450254
pathogenic
C0029235
organism