Urology. Men. Non-gonococcal urethritis(NGU). Leukocytes

[postlink]https://mickeyfun.blogspot.com/2009/12/urology-men-non-gonococcal.html[/postlink]http://www.youtube.com/watch?v=CR5HbxNB7Ewendofvid
[starttext]White blood cells (WBCs), or leukocytes (also spelled "leucocytes"), are cells of the immune system defending the body against both infectious disease and foreign materials[endtext]

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