contour trichomonas protozoan microorganism on white background

anatomical anatomy bacterium biological biology black cell contour disease drawing female flagella flagellum graphic gynecology healthcare human illustration infection infectious isolated line medical medicine membrane microbe microorganism microscope microscopic nucleus outline parasite parasitic parasitology pentatrichomonas protozoa protozoan reproductive science transmitted treatment trichomonas trichomoniasis urethra urethritis vaginalis vaginitis vector veneral white