Red blood cells, SEM

Red blood cells, SEM

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Credit: STEVE GSCHMEISSNER/SCIENCE PHOTO LIBRARY

Caption: Red blood cells. Coloured scanning electron micrograph of red blood cells (erythrocytes). These cells have a biconcave disc shape and a flexible structure. They contain the red pigment haemoglobin with which they transport and supply oxygen to the body. Some of the red blood cells are crenated (spiked, orange/yellow). This occurs due to osmosis when a blood sample is exposed to a concentrated solution. It may be symptomatic of uraemia (accumulation of nitrogenous waste in the blood) but more usually is the result of prolonged storage of a blood specimen. Magnification x600 at 6x7cm size.

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Keywords: anatomy, azotaemia, cells, circulatory system, coloured, crenated, crenation, echinocytes, erythrocyte, erythrocytes, human body, hyperosmotic, osmosis, red blood cell, scanning electron micrograph, sem, spicules, uraemia

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