Stereomicrograph of a Purslane (Portulaca) seed. Honorable Mention, 2011 Olympus BioScapes Digital Imaging Competition®.

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

Light micrograph of a transverse section through wheat stem showing uredosori of wheat rust (Puccinia graminis). These sori appear as rust-coloured streaks on the wheat. The released uredospores will ...

The image shows a developing Drosophila spermatid immunostained for caspase activity (green). TRITC-phalloidin is used to label actin (red). Caspase is required in spermiogenesis for the elimination ...

Differential interference micrograph (Nomarski) of late binary fission in the desmid algae, Micrasterias rotata.

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

Colorized image of Bidens Ferulifolia pollen on plant structures collected with a dual beam SEM/FIB microscope.

Scanning electron microscope image of Penta lanceolata stigma (receptive surface for pollen).

1 Premeiotic G2 in a diploid lily pollen mother cell. Four nucleoli are visible; chromatin is relatively uncondensed except for small segments of heterochromatin.

Metaphase II in a diploid lily. The chromosomes of both nuclei are lined up on the metaphase II plates.