MICHAEL ABBEY / SCIENCE PHOTO LIBRARY MICHAEL ABBEY / SCIENCE PHOTO LIBRARY
Light micrograph of a sample of rabbit testis tissue infected with Treponema pallidum, a Gram-negative, motile, spirochaete bacterium with subspecies that cause treponemal diseases such as syphilis, bejel, pinta and yaws. Magnification: 700x at 35mm.
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