ANIMAL;CHROMATOGRAPHY-AFFINITY;COMPARATIVE-STUDY;CYTOSOL/ME (metabolism);ENDOCYTOSIS;IMMUNOHISTOCHEMISTRY;IMMUNOTOXINS/*ME (metabolism);KINETICS;LEUKEMIA-L1210/*ME (metabolism);MICE;MICE-INBRED-DBA;MICROSCOPY-ELECTRON;ORGANELLES/ME (metabolism);TOXINS/*ME (metabolism);TUMOR-CELLS-CULTURED/ME (metabolism).