intestinal mucosa background giardia parasites parasitic trichomonas. infographics. on background.

anatomy background biological biology body cancer cell dangerous digestive disease duodenalis duodenum epithelium giardia giardiasis human ileum illustration infection infectious intestinal intestinalis intestine invasion isolated lamblia lambliasis medical medicine microbe microorganism microscope microscopic organism parasite parasitic parasitology poster protozoan science scientific small stomach system trichomonas trichomoniasis trophozoite urethra vagina vaginalis