Answer the following:
(i) Highlight the role of thymus as a lymphoid organ.
(ii) Give the name of the cells that are released from the above mentioned gland. Mention how they help in immunity?
(i) Thymus is a primary lymphoid organ. It is lobe-shaped and is known to be the site for growth and differentiation of antigen sensitive T-lymphocytes.
(ii) Thymus releases T-lymphocytes, which are involved in cell-mediated immunity and also help B-lymphocytes to produce antibodies.