Question

T-cells are lymphocytes which produce the
cellular immunity. These are developed from
(a) thymus
(b) liver
(c) spleen
(d) endothelium of blood vessels

Answer 1

Explanation:

(a) Thymus...hence called 't-cells'

Answer 2

Answer:

thymus

Cellular immunity is mediated by T lymphocytes, also called T cells. Their name refers to the organ from which they're produced: the thymus. This type of immunity promotes the destruction of microbes residing in phagocytes, or the killing of infected cells to eliminate reservoirs of infection.