NEETZoologyHuman Health and Diseases
What is the purpose of vaccines?
Options
- ATo neutralize the pathogenic agents during actual infection
- BTo produce antigenic polypeptides of pathogens
- CTo generate memory in the immune system
- DTo provide large scale production of vaccines
Correct answer
A. To neutralize the pathogenic agents during actual infection
Step-by-step solution
Active immunity is slow and takes time to give its full effective response when a host is exposed to antigens.Passive immunity is the term used for the process of injecting ready-made antibodies to protect the body against foreign agents.Colostrum is the yellowish fluid secreted by the mother during the initial days of lactationThe primary and secondary immune responses are carried out with the help of two special types of lymphocytes present in our blood, i.e., B-lymphocytes and T-lymphocytes.B-lymphocytes produce