Which cell has the responsibility of presenting foreign antigens to lymphocytes?
A) cytotoxic CD8⁺ T lymphocyte
B) dendritic cell
C) helper CD4⁺ T lymphocyte
D) natural killer

Question

Quizplus · Accepted Answer

Dendritic cells are antigen-presenting cells (APCs) that capture and present foreign antigen to T lymphocytes, initiating an immune response. While a cytotoxic CD8⁺ T lymphocyte requires antigen presentation by an APC to become activated, its primary function is to directly kill infected or foreign cells. Helper CD4⁺ T lymphocytes do play a role in antigen recognition, but their primary function is to provide support to other immune cells. Natural killer cells do not present antigen to lymphocytes but instead directly recognize and kill foreign or infected cells.

Which Cell Has the Responsibility of Presenting Foreign Antigens to Lymphocytes