ACTIVE IMMUNIZATION AGAIN STEPIDEMIC TYPHUS BY MEANS OF VACCINES PREPARED FROM ENDEMIC VIRUS - RUIZ CASTANEDA, MAXIMILIANO (HOSPITAL GENERAL, LABORATORIO DEL TIFO, CD. MEXICO, DF, MEX, 1941)
BRIT J EXP PATHOL
Keywords: IMMUNIZATION, STEPIDEMIC, TYPHUS, VACCINES, ENDEMIC, VIRUS; CIENCIAS MEDICAS; CIENCIAS CLINICAS; PATOLOGIA CLINICA