A person has been exposed to a particular antigen and now experiences a repeat exposure. What stimulates a quicker immune response? a) Memory T cellsb) immunityc) antibodiesd) macrophages

a. Memory T cells

Explanation:

Memory T cells are actually the antigen-specific T cells that remain long-term after an infection has been eliminated. These memory T cells are quickly converted into large numbers of effector T cells upon reexposure to the specific invading antigen, thus providing a rapid response to past infection that has been experienced before