Question

For a T-cell to recognize an antigen, it must interact with ______.

Options

• complement

• a macrophage

• a B-cell

• all of these

Answer 1

For a T-cell to recognize an antigen, it must interact with a macrophage.

Explanation:

For a T-cell to recognize an antigen, it typically must interact with an antigen-presenting cell such as a macrophage (or dendritic cell) that processes and presents the antigen via MHC molecules. This interaction is crucial for T-cell activation. Complement and B-cells are not directly involved in the recognition process by T-cells in this context.