
Mitochondria
This electron micrograph of a liver cell shows a large number of mitochondria in this active liver cell. Mitochondria vary in size and shape and are composed of two membranes, with the inner membrane extending into the matrix as shelf-like folds call cristae. Mitochondria also store calcium in electron dense matrix granules. Liver 20,000x

Mitochondria
This electron micrograph of a liver cell shows a large number of mitochondria in this active liver cell. Mitochondria vary in size and shape and are composed of two membranes, with the inner membrane extending into the matrix as shelf-like folds call cristae. Mitochondria also store calcium in electron dense matrix granules. Liver 20,000x

- Cristae
This electron micrograph of a liver cell shows a large number of mitochondria in this active liver cell. Mitochondria vary in size and shape and are composed of two membranes, with the inner membrane extending into the matrix as shelf-like folds call cristae. Mitochondria also store calcium in electron dense matrix granules. Liver 20,000x

- Matrix
This electron micrograph of a liver cell shows a large number of mitochondria in this active liver cell. Mitochondria vary in size and shape and are composed of two membranes, with the inner membrane extending into the matrix as shelf-like folds call cristae. Mitochondria also store calcium in electron dense matrix granules. Liver 20,000x

-- Matrix granules
This electron micrograph of a liver cell shows a large number of mitochondria in this active liver cell. Mitochondria vary in size and shape and are composed of two membranes, with the inner membrane extending into the matrix as shelf-like folds call cristae. Mitochondria also store calcium in electron dense matrix granules. Liver 20,000x

RER
This electron micrograph of a liver cell shows a large number of mitochondria in this active liver cell. Mitochondria vary in size and shape and are composed of two membranes, with the inner membrane extending into the matrix as shelf-like folds call cristae. Mitochondria also store calcium in electron dense matrix granules. Liver 20,000x

Glycogen granules
This electron micrograph of a liver cell shows a large number of mitochondria in this active liver cell. Mitochondria vary in size and shape and are composed of two membranes, with the inner membrane extending into the matrix as shelf-like folds call cristae. Mitochondria also store calcium in electron dense matrix granules. Liver 20,000x

Nucleus
This electron micrograph of a liver cell shows a large number of mitochondria in this active liver cell. Mitochondria vary in size and shape and are composed of two membranes, with the inner membrane extending into the matrix as shelf-like folds call cristae. Mitochondria also store calcium in electron dense matrix granules. Liver 20,000x