From the National Institutes of Health.
Healy
B
B
National Institutes of Health, Bethesda, MD 20892.
D006801:Humans; D007413:Intestinal Mucosa / Q000276:immunology*; D009316:National Institutes of Health (U.S.); D014481:United States; D014612:Vaccines / Q000008:administration & dosage* / Q000276:immunology
D014612:Vaccines