This photomicrograph shows the retina from the eye of a three-day-old zebrafish. The retina is viewed here from the front, as if the viewer is looking directly into the eye of the fish. This image is...

Ultrastructural Characterization of the Mouse Optic nerve Head and Retina

Scanning electron micrograph of a diatom showing the two silica based frustule (cell walls). Image also illustrates the regular pattern on the frustule.

Cone and rod mitochondria: electron tomography

Confocal micrograph of a mouse retina showing retinal astrocytes in red and blood vessels in green. Honorable Mention, 2011 Olympus BioScapes Digital Imaging Competition®.

Scanning electron micrograph of coralline algae. Coralline algae are characterized by a thallus that is hard because of calcareous deposits contained within the cell walls.

Colorized Scanning electron micrograph of an unfixed mint leaf showing stomata pores.

Scanning electron micrograph of a myxomycetes (a type of slime mold). This image was collected as part of a study to assess the diversity of myxomycetes in the Atlantic Forest.

Scanning electron micrograph illustrating bacteria contamination of cells.

The inner segment of photoreceptors in the retina is packed with long, thin mitochondria that contain curved cristae. This image by Toichiro Kuwabara is of a photoreceptor from human retina, and appe...