Ключевые слова: art, biological, contamination, copy space, cysts, diseases, distinctive, flagella, flagellates, flagellum, gastrointestinal, giardia, giardia lamblia, giardiasis, health, health science, hygiene, illness, illustration, infection, infectious, intestinal, lamblia, medical, medicine, microbiology, microscopic, organism, parasite, pathogen, pathology, protozoa, protozoan, protozoology, research, sanitation, scientific, study, transmission, trophozoite, visualization, waterborne,