Coloured scanning electron micrograph (SEM) of Salmonella enteritidis, Gram-negative, enteric, rod prokaryote (dividing); note the flagella. This zoonotic microorganism causes salmonellosis (food poisoning) in humans when infected fowl, domestic mammals or turtles contaminate milk, eggs, meat, poultry or shellfish (which humans ingest). Magnification: x2,200 when shortest axis printed at 25 millimetres.
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