EXPERIMENTAL transmission of minor respiratory illness to human volunteers by filter-passing agents; immunity on reinoculation with agents from the two types of minor respiratory illness and from primary atypical pneumonia.
D064368:Healthy Volunteers; D006801:Humans; D009175:Mycoplasma Infections; D011014:Pneumonia; D018410:Pneumonia, Bacterial; D011019:Pneumonia, Mycoplasma
PNEUMONIA/primary atypical, immunity on reinoculation; RESPIRATORY ILLNESS/filter-passing agent