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| Description: White blood cells may live for several months or years. Their main function is to combat invading microbes. During an invasion, many white blood cells are able to leave the bloodstream and collect at sites of invasion. The process is called emigration (diapedesis). Picture Stats: Views: 233 Filesize: 929.61kB Height: 1000 Width: 814 Source: https://biology-forums.com/index.php?action=gallery;sa=view;id=40775 |