Movie showing human stem cell colony migration.

This cross section shows a human fetal testis. Numerous seminiferous tubules appear within a lobe of the testis. It has not been treated with an antibody but is autofluorescent and therefore appears b...

Leishmania mexicana promastigote forms (WHO strain MNYC/BZ/62/M379). Cells were grown in M199 culture medium and fixed with glutaraldehyde, dehydrated in ethanol, critical-point dried and sputter coat...

Reproductive tissue of olive (Olea europaea) pistil during the progamic phase.

Scanning electron micrograph of passion flower pollen. A related image is CIL:39346.

Fluorescent micrograph of epithelial cells from the bladder wall. The cells were isolated immediately after collection of a urine specimen and are not fixed. The image was taken using a standard epi...

Cryo-scanning electron micrograph of petal epidermal cells of Mazus.

This is a scanning electron micrograph of a Hibiscus pollen grain.

Scanning electron micrograph of a diatom frustule. The frustule is the hard and porous cell wall or external layer of diatoms.

Scanning electron micrograph of Botrytis sp. (a mold) on the skin of a Pinot noir grape. Botrytis sp is grey-mold called nobel rot on wine grapes.