Fertilization generally occurs in the fallopian tube.
I think it would be phase 1 (sorry if I’m wrong)
The correct answer is that it produces antibodies against the sensitizing antigen.
Plasma cells are formed in the bone marrow, the B cells divide into plasma cells, which generate molecules of antibody. Once discharged into the lymph and blood, these antibody molecules combine with the target antigen, that is, foreign substance and starts its destruction or neutralization.
60 million years is the answer.
Answer:
So, the correct option is 'The causative HIV retrovirus reduces the number of T-helper lymphocytes'.
