A single computed slice through a tomographic reconstruction of a virological synapse formed between naturally HTLV-1 infected CD4+ T cells and autologous uninfected CD4+ target cells. HTLV-1 particle...

Tomogram of the immunological synapse between a cytotoxic T lymphocyte (CTL, top) and a target cell (bottom). The microtubule organization centre (MTOC) is polarized to the cell-cell contact site. The...

Transmission electron micrograph of an alveolar macrophage which contains E2, a fluorocarbon. This macrophage is from a mouse which liquid breathed that fluorocarbon for 3 hours and was allowed to rec...

Confocal micrograph of a stimulated mast cell that has just exploded releasing numerous histamine granules. The remains of the cell are seen towards the lower left, still containing a number of granul...

Colorized transmission electron microscope image of a mast cell full of histamine granules (pink). Histamine is released as part of an allergic reaction. The diameter of the cell is approx. 8.4 microm...

A scanning electron microscope image of an activated mast cell illustrating the convoluted topography of the cell membrane, which is populated with receptors.

Lymphocyte emperipolesis by lung, alveolar macrophage (multinucleated giant cell)

Transmission electron micrograph of a dividing myelocyte from the slender salamander Batrachoseps attenuatus showing mitotic chromosomes at late prophase.

Transmission electron micrograph of continuous endothelium from a rat diaphram capillary. Image aIso shows a reticulocyte in the capillary lumen. Image made available by James D. Jamieson and the De...

Early transmission electron micrograph showing an alpha cell in the Islet of Langerhans in the guinea pig pancreas. Alpha granules are prominent among the mitochondria, and a portion of nucleus is al...