Scanning electron micrograph of red blood cells clearly showing their biconcave disc shape. Human red blood cells are typically 8 microns x 2 microns in size.
B0006424 2006 Collection: Wellcome Images Copyrighted work available under Creative Commons by-nc-nd 2.0 UK: England & Wales, see http://creativecommons.org/licenses/by-nc-nd/2.0/uk/
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