THOMAS DEERINCK, NCMIR / SCIENCE PHOTO LIBRARY THOMAS DEERINCK, NCMIR / SCIENCE PHOTO LIBRARY
HeLa cells. Multi-photon fluorescence light micrograph of a group of cultured HeLa cells, showing the cell nuclei, which contain the cells' genetic information (DNA, blue), and microtubules (pink). HeLa cells are a continuously cultured cell line of human cancer cells. They are immortal and so thrive in the laboratory. HeLa cells are widely used in biological and medical research. Magnification: x500 when printed 10 centimetres wide.
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