ANATOMY

Detailed explanation-1: -Lymphocytes are mature, infection-fighting cells that develop from lymphoblasts, a type of blood stem cell in the bone marrow. Lymphocytes are the main cells that make up lymphoid tissue, a major part of the immune system. Lymphoid tissue is found in lymph nodes, the thymus gland, the spleen, the tonsils, and adenoids.

Detailed explanation-2: -There are two major types of lymphocyte: B lymphocytes, which mature in the bone marrow; and T lymphocytes, which mature in the thymus.

Detailed explanation-3: -The lymphocytes mature and become specialized T-cells in your thymus. After the T-cells have matured, they enter your bloodstream. They travel to your lymph nodes (groups of cells) and other organs in your lymphatic system, where they help your immune system fight disease and infection.

Detailed explanation-4: -The thymus gland, which lies near the heart and is often called the heart sweetbread, is the best one. The thymus and thyroid glands and the pancreas are included under the term sweetbreads.

Detailed explanation-5: -The T Cell: T-cells mature in the thymus gland or in the lymph nodes. Since the thymus is only 10-15% functional in the adult, the lymph nodes take on greater importance in the maturation process.