title: OBSERVATIONS ON THE FURTHER ATTENUATION OF MEASLES VIRUS AND ON LIVE VACCINES PREPARED FROM HIGHLY ATTENUATED LINES OF VIRUS.
mesh_terms: D000650:Amnion; D000818:Animals; D002642:Chick Embryo; D002648:Child; D002681:China; D006385:Hemagglutination Inhibition Tests; D006801:Humans; D007223:Infant; D008457:Measles; D008458:Measles Vaccine; D008459:Measles virus; D009500:Neutralization Tests; D046509:Tissue Culture Techniques; D014611:Vaccination; D014613:Vaccines, Attenuated; D014776:Virus Cultivation
chemical_list: D008458:Measles Vaccine; D014613:Vaccines, Attenuated
keywords: AMNION; CHICK EMBRYO; CHILD; CHINA; HEMAGGLUTINATION INHIBITION TESTS; INFANT; MEASLES; MEASLES VACCINE; MEASLES VIRUS; NEUTRALIZATION TESTS; TISSUE CULTURE; VACCINATION; VIRUS CULTIVATION