STEVE GSCHMEISSNER / SCIENCE PHOTO LIBRARY STEVE GSCHMEISSNER / SCIENCE PHOTO LIBRARY
Stressed culture cell. Coloured scanning electron micrograph (SEM) of a culture cell, showing excessive production of cell processes in reaction to stress. It is a human endothelial cell, a type that lines internal body surfaces, for example blood and lymphatic vessels. The cell may be stressed because the culture medium or temperature is inappropriate for the cell.
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