The cells of innate immunity that activate the lymphocytes of adaptive immunity are the:
A)macrophages and Langerhans cells
B)mast cells and neutrophils
C)basophils and eosinophils
D)eosinophils and monocytes

Question

Quizplus · Accepted Answer

Macrophages and Langerhans cells are examples of antigen-presenting cells (APCs) that process and present antigens to T and B cells, initiating the adaptive immune response. Mast cells and neutrophils are not APCs, and basophils and eosinophils are not primary activators of adaptive immunity. Eosinophils do play a role in modulating the adaptive immune response, but their primary function is to combat parasitic infections. Monocytes are precursors to macrophages but do not activate lymphocytes directly.

The Cells of Innate Immunity That Activate the Lymphocytes of Adaptive