Non-specific host defence that exists prior to the exposure to an antigen is called

''Maintenance of personal and public hygiene is necessary for prevention and control of many infectious diseases''. Justify the statement giving suitable examples.

Cocaine interferes with the transport of the neuro-transmitter ………

Cholera patient is administrated by ’saline drip' because

A boy happens to put his foot on a rusted nail and the doctor gives him an injection. Most likely he has given