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598766178

Electron micrograph of Treponema pallidum on cultures of cotton-tail rabbit epithelium cells (Sf1Ep).Treponema pallidum is the causative agent of syphilis. In the United States, over 35,600 cases of syphilis were reported by health officials in 1999.

Electron micrograph of Treponema pallidum on cultures of cotton-tail rabbit epithelium cells (Sf1Ep).Treponema pallidum is the causative agent of syphilis. In the United States, over 35,600 cases of syphilis were reported by health officials in 1999.

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s 500 px 437 px 0.5
m 1000 px 874 px 2
l 2000 px 1748 px 8
xl 3630 px 3173 px 15

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