Coloured scanning electron micrograph (SEM) of Brucella melitensis, Gram-negative, aerobic, coccobacillus prokaryote; causes brucellosis fever (also known as undulant or Malta fever). This zoonotic microorganism passes from goats and sheep to humans in contaminated dairy products. Magnification: x3,420 when shortest axis printed at 25 millimetres.
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