A) if due to some reason B and T-lymphocytes are damaged, the body will not produce antibodies against a pathogen
B) injection of dead/inactivated pathogens causes passive immunity
C) certain protozoans have been used to mass produce hepatitis B vaccine
D) injection of 'snake anti venom against snake bite is an example .of active immunization
Correct Answer: A
Solution :
The primary and secondary immune responses are carried out with the help of two special types of lymphocytes present in our blood, ie, B-lymphocytes and T-lymphocytes. The B-lymphocytes produce an array (a range) of proteins in response to pathogens into our blood to fight with them. These proteins are called antibodies. The T-cells themselves do not secrete antibodies but help B-cells to produce them.
You need to login to perform this action.
You will be redirected in
3 sec
