B cells interacting with helper T cells are stimulated to differentiate when B cells interacting with helper T cells are stimulated to differentiate when
Importance of Helper T cell
Considering that they are necessary for practically all adaptive immune responses, helper T cells are perhaps the most critical cells in adaptive immunity.
- They not only aid in the activation of B cells to release antibodies and macrophages to eliminate ingested microorganisms, but they also aid in the activation of cytotoxic T lymphocytes to kill infected target cells.
- We cannot protect ourselves against numerous ordinarily innocuous bacteria without helper T cells, as proved strikingly in AIDS patients.
However, helper T cells can only operate when stimulated to become effector cells.
- They are activated on the surface of antigen-presenting cells, which develop during infection-induced innate immune responses.
- Innate reactions also determine the type of effector cell that a helper T cell will grow.
Hence, the correct answer is option D
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