Many microbial pathogens enter the gut of humans along with food. What are the preventive barriers to protect the body from such pathogens ? What type of immunity do you observe in this case ?
The mucus coating of the epithelium lining of the gut helps in trapping microbes entering the body.
Saliva in the mouth contains lysozyme which kills the pathogens. hydrochloric acid in gastric juice secreted by stomach prevent microbial growth.
All these type of immunity is innate immunity.
............. Technology is useful in Vaccines production
Assertion: Artificially acquired passive immunity results when antibodies or lymphocytes produced outside the host are introduced into a host.
Reason: A bone marrow transplant given to a patient with genetic immunodeficiency is an example of artificially acquired passive immunity.
What is the basic principle of vaccination ? How do vaccines prevent microbial infections ? Name the organism from which hepatitis $B$ Vaccine is produced.
What is the role of spleen in Human body?
Thymus is the site for the development and maturation of