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False-colour scannning electron micrograph of a T-lymphocyte killer cell (small cell at left), attacking a large cancer tumour cell. The T- lymphocyte, a white blood cell, must make intimate contact with the tumour cell. It does so by recognizing antigens on the tumour’s surface.

Alveoli in the lung

Bone cancer cell - “And unless we face world population head-on, we are doing nothing more than sticking a Band-Aid on a fast-growing cancerous tumor.” - chapter 31

A developing fetus at 14 weeks. The fetus is able to perceive sounds from outside the womb. Photo by Lennart Nilsson.

Lung cancer cell division. Coloured scanning electron micrograph (SEM) of a lung cancer cell during cell division (cytokinesis). Credit: STEVE GSCHMEISSNER/SCIENCE PHOTO LIBRARY

This is a scanning electron microscope image from normal circulating human blood.

Papier Mache gynecological model after Dr Louis Auzoux c 1880

Coloured scanning electron micrograph of dividing cancer cells. One of the features that defines a cancer cell is that it undergoes rapid di...