(CROSS-IMMUNITY STUDIES ON VIRULENT STRAINS OF LEPTOSPIRES BELONGING TO DIFFERENT SEROTYPES.)
D000818:Animals; D006168:Guinea Pigs; D007109:Immunity; D007919:Leptospira; D007922:Leptospirosis; D012106:Research; D065288:Serogroup
EXPERIMENTAL LAB STUDY; GUINEA PIGS; IMMUNITY; LEPTOSPIRA; LEPTOSPIROSIS