Colorized scanning electron micrograph of a a grain of pollen from a peony plant. Peonies are herbaceous plants native to Asia, Southern Europe and Northern America.

Scanning electron micrograph of red blood cells clearly showing their biconcave disc shape. Human red blood cells are typically 8 microns x 2 microns in size.

Scanning electron micrograph of a cluster of breast cancer cells showing visual evidence of programmed cell death (apoptosis) in yellow. Each cell is 15 micrometers across.

A scanning electron color-enhanced image showing a clump of prostate cancer cells.

Colorized scanning electron micrograph of a Feverfew (Tanacetum parthenium) stoma. Measuring 20 microns, a stoma (plural stomata) is a pore, found in the leaf and stem epidermis that is used for gas e...

Colorized scanning electron micrograph of a human embryonic stem cell (gold) growing on a layer of supporting cells (fibroblasts). Stem cells are derived from very early embryos and can either be grow...

Scanning electron micrograph of human colon cancer cells in culture. Colon cancer is the third most common cancer in Britain. People are more likely to develop this cancer if they eat a diet high in a...

A colour-enhanced scanning electron micrograph image showing a cluster of Clostridium difficile on a surface. Clostridium difficile is a species of Gram-positive bacteria that causes severe diarrhea a...

Colorized scanning electron micrograph of a lavender leaf. Lavender (Lavandula) yields an essential oil with sweet overtones, and can be used in balms, salves, perfumes, cosmetics, and topical applica...

Colorized scanning electron micrograph of rust on a rose leaf. Rose rust is a disease specific to roses and is caused by the parasitic fungus Phragmidium tuberculatum and some other closely related s...