May. 25, 2022
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Photomicrograph of a Gram stain of spinal fluid at 1000x magnification. Neisseria meningitidis grew from this spinal fluid. Numerous polymorphonuclear leukocytes and the classic Gram-negative diplococci morphology are visible. (Photomicrograph by Microman12345 on February 13, 2019. Creative Commons Attribution 4.0 International License, http://creativecommons.org/licenses/by/4.0.)