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
It is true regarding normal microbial flora present on skin and mucous membrane that
assistant
The correct answer is  It is present in stomach soon after food. It establishes on body during labour and not after neonatal period. Lower respiratory tract ie below trachea is sterile.