Ключевые слова: anal, analyzing, anatomy, animal, anus, biology, children, digestive, disease, drawing, egg, engraved, enterobiasis, enterobius, exam, faecal, fecal, feces, fluke, helminth, infection, infectious, intestinal, isolated, itching, laboratory, liver, lung, medical, medical technology, medicine, micro organism, microscope, microscopic, nematode, opisthorchis viverrini, parasite, parasitic, pinworm, protozoa, roundworm, science, stool, tapeworm, test, treatment, whipworm, worm,