Keywords: Rhesus colon infected by Watsonius watsoni.jpg en Colon from a rhesus monkey shows inflammation caused by Watsonius watsoni Digenea Gastrothylacidae http //phil cdc gov/phil/details asp pid 2971 Public Health Image Library 1971 Roger Broderson PD-USGov CDC-PHIL 2971 Watsonius watsoni Macaca mulatta anatomy Mammal digestive system |