Biochemistry - Immune Response - Discussion

Discussion :: Immune Response - Section 1 (Q.No.4)

4. 

If a person is vaccinated against a disease sometime in the past, which of the following is currently in your body?

[A]. The disease organism itself and antigens for the disease organism
[B]. A very high level of antibodies against the disease antigens
[C]. Memory B lymphocytes for the antigen of this disease organism
[D]. All of the above

Answer: Option D

Explanation:

No answer description available for this question.

Biogyan said: (Apr 27, 2018)  
Vaccines help develop immunity by imitating an infection. This type of infection, however, does not cause illness, but it does cause the immune system to produce T-lymphocytes and antibodies. Once the imitation infection goes away, the body is left with a supply of "memory" T-lymphocytes, as well as B-lymphocytes that will remember how to fight that disease in the future. However, it typically takes a few weeks for the body to produce T-lymphocytes and B-lymphocytes after vaccination. Thus, option D is correct.

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