A simple drawing of the<unk>  The<unk>  is one of the symbols of pharmacology, and along with the Rod of Asclepius it is one of the most ancient and important symbols related to medicine in western countries.<unk>  was the Greek goddess of health, hygiene, and the associate, wife, or daughter of Asclepius. Asclepius' symbol is his rod, with a snake twined around it; correspondingly,<unk> 's symbol is a cup or chalice with a snake twined around its stem.<unk>  was also invoked, along with her father Asclepius, and Panacea in the original Hippocratic Oath.
Bowl of Hygieia
Head louse
Body louse
Crab louse
Pest house
Schistosoma
Pinworm 
Hookworm