echinococcus granulosus life cycle. hand drawing black and white sketch .

adult and black brain breed canine cestode clinic cycle cyclophyllid cyst cysticercus dangerous disease dog drawing echinococcus egg granulosus hand health hexacanth hydatid illustration lethal life liver medicine microscope microscopic organ parasite parasites pet platyhelminthes proglottids proliferation scolex segment sketch tapeworm tissue unhealthy veterinary white worm