TIMELAPSE VISION INC / SCIENCE PHOTO LIBRARY TIMELAPSE VISION INC / SCIENCE PHOTO LIBRARY
White blood cells leaving bloodstream. Time-lapse light microscopy footage of white blood cells (leucocytes) migrating to the surrounding tissue from the bloodstream. This is known as extravasation (or diapedesis) and is a response by the body to tissue damage or infection. The white blood cells are part of the innate (non-specific) immune system response.
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