Question

1. Primary lymphoid tissues are the principle locations where immune cells interact with and eliminate pathogenic bacterial cells.

   True

   False

Answer 1

The answer is False.

The Primary lymphoid tissues are the principal locations where the development of the lymphocytes from progenitor cells occur into mature and functional lymphocytes. The primary lymphoid tissues are Thymus and Bone marrow. The secondary lymphoid tissues are the places where lymphocytes interact with pathogenic bacterial cells and eliminate them by phagocytic activity. The examples of secondary lymphoid tissues are lymph nodes, spleen, and mucosa-associated lymphoid tissues.