Mice, Inbred BALB CMice, Inbred C57BLMycobacterium lepraemuriumMycobacterium InfectionsMice, Inbred StrainsSpleenImmunity, ActiveNeoplasms, ExperimentalMice, Inbred C3HLeukemia Virus, MurineNeoplasm TransplantationLymphomaSpecies SpecificityMelanoma, ExperimentalTime FactorsBALB 3T3 CellsLeishmania majorLeishmaniasis, Cutaneous