<prompt> It is true regarding normal microbial flora present on skin and mucous membrane thatIt cannot be eradicated by antimicrobial agentsIt is absent in the stomach due to acidic pHIt establishes in the body only after the neonatal periodThe flora in the small bronchi is similar to that of the trachea  <response>: 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. 