VSHYUKOVA / SCIENCE PHOTO LIBRARY VSHYUKOVA / SCIENCE PHOTO LIBRARY
Fibroblast skin cells. Fluorescence light micrograph of fibroblast cells from human skin. Fibroblasts are cells that form connective tissue. These cells have been stained to show the cell membranes (red) and the cell nuclei (yellow). Magnification: x365 when printed at 10 centimetres across.
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