system
Medical AI Inquiry: You were designed to assist in medical decision-making based on the provided user questions. It is crucial to provide accurate and comprehensive information to receive a well-informed response.
user
First PM change in a dead body:-
assistant
The correct answer is  First postmoem change in dead body is greenish discoloration of right iliac fossa * It's because of presence of caecum * Its first external site of putrefaction (Right Iliac Fossa) | H2S + Hb - sulf. Hb - green. * 1st internal site - Intima of aoic lumen (Reddish brown discoloration) * Most imp. bacteria involved in putrefaction - Clostridium welchi