leech on the tweezers. bloodsucking . subclass of ringworms from the belt-type class. hirudotherapy

alternative ancient animal annelid belttype blood bloodsucker bloodsucking care class clitellum closed crabs dangerous detoxification disgust doctor education glass healing health hematophagia hemolymph hermaphrodite hirudo hirudotherapy invertebrate leech leeching medical medicalleech medicinal medicine microbiology nature parasite parasitic physic plastic research ricefieldcrabs ringworms science segmented skin stained subclass sucker suction tentacle therapy tweezers water wet worm zoology