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% […]
Essay on Lymphocytes and Its Types | Circulatory System | Humans | Biology
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Essay on Vaccination and Immunisation in Humans | Immunity | Immunology
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In this essay we will discuss about the process of vaccination and immunisation in humans. Vaccination is the most important method of preventing infection of micro-organisms, especially of bacteria and viruses. In this, a vaccine (antigen) is inoculated inside body to stimulate the formation of antibodies by the defensive system of the body, so a […]
Essay on Lymphoid Organs | Lymphatic System | Humans | Biology
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In this essay we will discuss about the primary and secondary lymphoid organs. Essay # 1. Primary Lymphoid Organs: These are those lymphoid organs where immature lymphocytes differentiate to antigen-sensitive lymphocytes e.g: 1. Bone Marrow: It is highly vascular fatty tissue present in the cavities of the long bones and is of two types: Red […]
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