A certain cell type has existed in the blood and tissue of its vertebrate host's immune system for over 20 years. One day, it recognizes a newly arrived antigen and binds to it, subsequently triggering a secondary immune response in the body. Which of the following cell types most accurately describes this cell?
A) plasma cell
B) thyroid cell
C) memory cell
D) macrophage

Question

Quizplus · Accepted Answer

Memory cells are a type of immune cell that "remember" previously encountered antigens and mount a faster and stronger immune response upon re-exposure to the same antigen. They can exist in the body for many years, and are responsible for the long-term immunity that vaccines provide. Therefore, the cell in this scenario is most likely a memory cell.

A Certain Cell Type Has Existed in the Blood and Tissue