A photomicrograph of a stained semi-thin section of mouse ovary, showing a maturing Graafian follicle. The ovary contains many follicles that contain immature oocytes (egg cells). The follicle is impo...

This is a live image of the bdelloid rotifer Philodina roseola. Bdelloid rotifers are microscopic freshwater invertebrates best known for their capacity to undergo frequent cycles of desiccation and r...

Colorized scanning electron micrograph of an eggshell collected at 3900X magnification.

Fluorescent micrograph of a Drosophila melanogaster reproductive system highlighting the muscular and neural structure fruitfly ovaries and uterus. The background staining of the eggs in red is a spe...

Video of zebrafish embryo development from a 2-cell egg to fish larva. Images were collected using confocal microscopy. Honorable Mention, 2011 Olympus BioScapes Digital Imaging Competition®.

Fluorescent micrograph of stage V-VI Xenopus laevis oocytes surrounded by thousands of follicle cells, as visualized by Hoechst staining.

How the cell cytoplasm is spatially organized is of fundamental interest. In ordinary animal cells the cytoplasm is organized by a radial array of microtubules, called an aster. Aster microtubules are...

Scanning electron micrograph of a hamster oocyte cumulus complex. Cumulus cells (purple) and matrix (gray) are shown. Small blood clots (red) also often appear in oocyte cumulus complexes. The red blo...

Model of the structure of the synaptonemal complex (SC) in Drosophila females based on EM immunolocalization of SC components C(3)G and C(2)M.

Light micrograph of human ovum (egg) and sperm. The ovum is much larger than the sperm and is surrounded by protective cumulus cells around the outside surface (yellow). The membrane surrounding the o...