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

alternative ancient animal annelid annelida anxiety background belttype black blood bloodsucking care class closed comprise dangerous detoxification disease disgust doctor earthworms fluke glass healing health hematophagia heparin hermaphrodite hirudotherapy invertebrate jar leech leeching medical medicalleech medicinal medicine microbiology nature paraphyletic parasite procedure relief research ringworms science skin slice stained subclass sucker therapy water wet worm