'Cell Structure', painting of an idealised animal cell, 1986.
© Science Museum / Science & Society Picture Library
Acrylic on gesso panel painting by John Barber and Cynthia Clark, showing the internal structure of an idealised animal cell. The cell is the smallest living unit capable of growth, movement and reproduction. Cells can live in the body from between a matter of just a few minutes to several years, and are constantly being recreated from other cells by a process of division called mitosis.