THE ULTRASTRUCTURE OF THE DOUBLE MEMBRANE SYSTEMS OF MITOCHONDRIA

In 1954, Rhodin (1) reported doubling ~)f the individual walls of the cristae of mitochondria in cells of the proximal convoluted tubule of the mouse kidney. The size of these structures was such that their visualization constituted a special problem in high resolution electron microscopy. During an electron microscopic investigation of normal human leukocytes it was found that white blood cells were amenable to the study of mitochondria (2). Therefore it seemed expedient to attempt to demonstrate this exceedingly fine structure in human leukocyte mitochondria.