 He uses various herbs, including coca leaves, and passes a live Andean guinea pig (the "cuy") over the body or the patient as a diagnostic tool.The "cuy" is then killed and its entrails studied to diagnose the illness and prescribe treatment, which is a combination of traditional medicinal herbs and Christian practices.This "retablo" shows a ceremony (“"Yawar Fiesta"”) involving a struggle between a bull (symbol of the Spanish) and a condor (symbol of the Andeans).