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Treponema pallidum subspecies pertenue from a yaws lesion exudate

This is a photomicrograph of a yaws lesion exudate stained using a specific anti-treponemal fluorescein-labeled antibody, which revealed the characteristic corkscrew morphology exhibited by Treponema pallidum subspecies pertenue bacterial spirochetes. The slide was examined under ultraviolet light using a red filter. (Source: Photography by Dr. Peter Perine, Centers for Disease Control and Prevention, 1979. Public Health Image Library ID# 17890, Centers for Disease Control and Prevention, Atlanta, Georgia. Public domain.)

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