A characteristic that defines a tissue as primary vs.secondary lymphoid tissue is:
A)That activated cells reside in primary and resting cells reside in secondary lymphoid tissue
B)The quantity of cells in each
C)T cells in primary and B cells in secondary tissue
D)The ability of the lymphoid cells to respond to antigens

Question

Quizplus · Accepted Answer

The ability of lymphoid cells to respond to antigens differentiates primary and secondary lymphoid tissue. Primary lymphoid tissue is where immune cells develop and mature, such as the thymus and bone marrow. Secondary lymphoid tissue is where immune cells encounter antigens and mount immune responses, such as lymph nodes and spleen. In primary lymphoid tissue, lymphoid cells have not yet encountered antigens and are not fully activated, whereas in secondary lymphoid tissue, lymphoid cells are activated and ready to respond to antigens.

A Characteristic That Defines a Tissue as Primary Vs