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embryo wound healing SEM

Paul Martin

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Credit: embryo wound healing SEM. Credit: Paul Martin. CC0 1.0 Universal

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A scanning electron micrograph of a healing wound on the surface of a chick embryo limb bud about one hour after wounding. The leading edge of the outer surface (epithelium) cells, shown by the curved line, forms a cable (made up of a protein called actinomyosin) which draws the epithelium over the underlying tissue to close the wound. In embryos wounds heal perfectly without a scar. Biomedical Image Awards 1998.


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