Mitochondria can show tremendous variation in size, even within a single cell. Here, a huge spherical mitochondria of about 6-7 µm in diameter is adjacent to small elongate mitochondria 0.5 µm wide...

The internal structure of mitochondria can change in response to physiological demand. Here, after the Sheepshead minnow Cyprinodon variegatus was kept in constant light for 4 weeks, mitochondria fro...

In the basal region of polarized epithelium engaged in ion transport, mitochondria are lodged between the interdigitating membranes of neighboring cells. This example is of a transverse section throu...

The high wing beat frequency in insects is intense muscle work, and dependent on a ready supply of ATP. This micrograph of flight muscle from the moth, Phytometra gamma shows the physical relationship...

Transmission electron micrograph of guinea pig pancreas mitochondria and lipid droplets. The use of osmium tetroxide as a fixative for electron microscopy was first described by Dr. Palade at the Roc...

Figures 226 (upper) and 227 (lower) from Chapter 7 (Mitochondria) of 'The Cell, 2nd Ed.' by Don W. Fawcett M.D. Examples of mitochondrial DNA from a plant cell (Vicia faba), and from the snake adrena...

Figure 233 from Chapter 7 (Mitochondria) of 'The Cell, 2nd Ed.' by Don W. Fawcett M.D. Capturing stages of mitochondrial division in cells from the gastric mucosa of a mole with the electron microsco...

Figure 237 from Chapter 7 (Mitochondria) of 'The Cell, 2nd Ed.' by Don W. Fawcett M.D. Mitochondria in cells of brown adipose tissue (shown here in interscapular brown fat of the bat) are dense, and ...

Figure 240 from Chapter 7 (Mitochondria) of 'The Cell, 2nd Ed.' by Don W. Fawcett M.D. The shape of mitochondrial cristae can vary with cell type, shown here in a cell from hamster adrenal cortex. Fo...

A lattice arrangement of mitochondria is rare in vertebrate cells, but can be observed here in mature Sertoli cells of the Xenopus testes. Multiple parallel fenestrated layers of cristae are interconn...