Transmission electron micrograph of an unstained, unfixed cytochrome c oxidase crystal prepared from beef heart mitochondria imaged in the frozen hydrated state. A crystalline organization is seen wit...

Avian erythrocytes differ from most vertebrates in retaining the nucleus at maturity. During erythrocyte development, transcription is progressively shut down and nuclei become compact and heterochrom...

The tubular cristae of mitochondria bear a pair of protrusions when seen in cross section. These are the F1 subunits of F1F0 ATP synthase enzymes which play a role in producing ATP, the cell’s main ...

Mitochondria in HeLa cells are identified by mito-YFP (green). When fixed cells are permeabilized with 0.25% Triton X-100 (TX-100), both antibodies to cyctochrome c (red), a mitochondrial matrix marke...

Mitochondria in HeLa cells are identified by mito-YFP (green) following treatment with the mitochondrial depolarizing agent CCCP (carbonyl cyanide m-chlorophenyl hydrazone). When fixed cells are perme...

Mitochondria in HeLa cells are identified by mito-YFP (green). When fixed cells are unpermeabilized (not treated with detergent), antibodies to cyctochrome c (red), a mitochondrial matrix marker, and ...

Mitochondria in HeLa cells are identified by mito-YFP (green). When fixed cells are permeabilized with 0.005% digitonin, the antibody to cyctochrome c (red), a mitochondrial matrix marker, is unable t...

Mitochondria in HeLa cells are identified by mito-YFP (green) following treatment with the mitochondrial depolarizing agent CCCP (carbonyl cyanide m-chlorophenyl hydrazone). When fixed cells are unper...

Mitochondria in HeLa cells are identified by mito-YFP (green) following treatment with the mitochondrial depolarizing agent CCCP (carbonyl cyanide m-chlorophenyl hydrazone). When fixed cells are perme...