3d isometric flat of proglottid of taperworm

worm taenia helminth tapeworm tape proglottid ascaris isometric vector 3d cartoon illustration flat concept background icon design roundworm solium pork parasite animal cestoda medicine medical human pinworm science label pig schistosomiasis fauna beef meat nematode adult biology infection hookworm egg anatomy classification disease zoology model platyhelminthes microscope diagram invertebrate