MOREDUN ANIMAL HEALTH LTD / SCIENCE PHOTO LIBRARY MOREDUN ANIMAL HEALTH LTD / SCIENCE PHOTO LIBRARY
Trichomonas vaginalis. Scanning electron micrograph of the parasitic protozoan Trichomonas vaginalis, the cause of sexually transmitted vaginitis. This pear-shaped organism is 15-20 microns in length and equipped with whip-like organs called flagella (bottom), which enable it to move around. It infects the genito-urinary tract of both sexes. In men this is often symptomless, but in women it causes painful inflammation of the vagina (vaginitis) and a foul- smelling, frothy discharge. Transmission is commonly, but not exclusively, by sexual inter- course. Magnification x7000 at 10x8 inch size.
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