Helper T cell activation occurs more readily if the antigen presenting cells are
A)dendritic cells and macrophages.
B)macrophages and mast cells.
C)B and T lymphocytes.
D)neutrophils and basophils.

Question

Quizplus · Accepted Answer

Helper T cells require antigen presenting cells (APCs) to activate them. Dendritic cells and macrophages are the most effective APCs, as they can engulf and process antigens from a variety of sources and present them to the T cells via MHC class II molecules. Macrophages and mast cells may also function as APCs, but they are not as efficient as dendritic cells. B and T lymphocytes are not APCs themselves, but they can interact with APCs to activate helper T cells. Neutrophils and basophils are not effective APCs and do not play a significant role in helper T cell activation.

Helper T Cell Activation Occurs More Readily If the Antigen