Abstract
A comparative histochemical study was carried out on the mito chondria of liver and kidney cortex and isolated mitochondria. Isolated mitochondria showed swelling or deformity different from those in situ, but the staining characteristics did not change by the isolation procedure. Both types of mitochondria were stained with iron hematoxylin, but not with Sudan III. Both contained a substance positive to the periodic acid S c h i f f reaction and negative to salivary reaction and a substance which was stained with toluidin blue and methyl green-pyronin but not with Feulgen reaction.
