the life cycle of taenia saginata or beef tapeworm

animal beef biological biology cattle cestoda contaminated cow cycle cyclophyllidea cysticerci danger develop disease egg eggs environment feces flat flatworm helminthiasis hook human illustration infected infective ingesting inside intestinal larva life macro medical medicine microscope microscopic muscle oncospheres parasite parasitic pick proglottid proglottids raw saginata science scientific scolex scolexs solium taenia taeniarhynchus taeniasis tape tapeworm tissue undercooked vegetation viable worm zoological zoology zoonotic