Leukemia P388Sarcoma 180Leukemia, ExperimentalAntibiotics, AntineoplasticLeukemiaLeukemia, Myeloid, AcuteFermentationT-Lymphocytes, CytotoxicCytotoxicity, ImmunologicLeukemia, Lymphocytic, Chronic, B-CellLeukemia, LymphoidDrug Screening Assays, AntitumorLeukemia, Myelogenous, Chronic, BCR-ABL PositiveCytotoxinsLeukemia Virus, MurineAntineoplastic AgentsCytotoxicity Tests, ImmunologicLeukemia L1210Cell Line, TumorPrecursor Cell Lymphoblastic Leukemia-LymphomaCell SurvivalLeukemia, T-CellTumor Cells, CulturedKiller Cells, NaturalHL-60 CellsLeukemia, Monocytic, AcuteCell LinePore Forming Cytotoxic ProteinsMoloney murine leukemia virus