In this article we will discuss about the features of adaptive immune responses. 1. Specificity: It ensures that distinct microbes elicit specific responses. It exists because individual lymphocyte expresses membrane receptors that are able to distinguish subtle differences in structure between different antigens. 2. Diversity: It enables immune system to respond to a large variety of microbes. The total no. [...]
In this article we will discuss about the primary and secondary lymphoid organs. Primary Lymphoid Organs: In primary lymphoid organs, immature lymphocytes differentiate to mature ones into an antigen sensitive lymphocytes and after maturation, lymphocytes migrate to secondary lymphoid organs. These are of two types: (a) Bone marrow (b) Thymus (a) Bone Marrow: It is the main lymphoid organ, where [...]
In this article we will discuss about the structure of an antibody molecule with the help of a suitable diagram. Also learn about its types. Antibody is a type of protein molecule produced by B-lymphocytes in response to pathogens. T-cells do not secrete antibodies directly however, they help B-cells to produce them. Each antibody molecule has four peptide chains. Out [...]