Advances in preventive inoculation.
D006801:Humans; D008457:Measles; D023321:Poliovirus Vaccines; D012900:Smallpox Vaccine; D013745:Tetanus Toxoid; D014611:Vaccination
D023321:Poliovirus Vaccines; D012900:Smallpox Vaccine; D013745:Tetanus Toxoid
MEASLES; POLIOVIRUS VACCINE; SMALLPOX VACCINE; TETANUS TOXOID; VACCINATION