Essay on Lymphocytes and Its Types | Circulatory System | Humans | Biology

In this essay we will discuss about lymphocytes and its types. Lymphocytes are a kind of granulocytes of leucocytes (WBCs) of blood. These form the main cells involved in immune system. These are formed by liver and thymus in the foetus and by the bone marrow and lymph nodes in adults. These form about 30% of leucocytes of blood. There [...]