Lung cancer cells.

Colorized scanning electron micrograph of collagen/connective tissue removed from a human knee during arthroscopic surgery. The horizontal field width of the image is 16 microns. Wellcome Image Awar...

Colorized scanning electron micrograph of a lung cancer cell grown in culture.

Colorized transmission electron micrograph (TEM) of rough endoplasmic reticulum (ER) from an acinar cell in the pancreas.

Colour-enhanced scanning electron micrograph image of a breast cancer cell.

Scanning electron micrograph of pancreatic cancer cells. See additional image at CIL:39076.

Colorized scanning electron micrograph of a lung cancer cell.

Colorized scanning electron micrograph showing two lung cancer cells. These cells were grown using cell culture techniques.

Colorized scanning electron micrograph of a lung cancer cell grown in culture.

Scanning electron micrograph of the Drosophila compound eye. Close-up shows the multi-faceted cornea (pink) and the thin, hair-like structures called setae (green) which are believed to reduce glare.