Immunity

Hypersensitivity Hypersensitivity or allergy refers to the injurious consequences in the sensitized host, following subsequent contact with specific antigens. Type-1 Hypersensitivity Reaction Mechanism Type-1 Hypersensitivity reaction occurs through two phases: Read And Learn More: Micro Biology And Immunology Notes Examples of Type 1 … [Read more...] about Hypersensitivity Types Notes

Structure of Immune System and Immune Response Central Lymphoid Organs Bone Marrow The progenitor T- and B-cells originate in bone marrow. Further development of B-cells occurs in bone marrow itself; whereas the progenitor T-cells proliferate in thymus. Thymus Thymus is developed in the embryonic life (third month) from third/fourth pharyngeal pouch. It is highly … [Read more...] about Structure And Function Of Immune System Notes

Antigen, Antibody, Antigen-Antibody Reaction, And Complement Antigen Antigen is defined as any substance that satisfies two distinct immunologic properties: Immunogenicity: Ability of an antigen to induce immune response in the body (both humoral and/or cell mediated). B-cells + antigen → effector B-cells (plasma cell) + memory B-cells T-cells + antigen → effector … [Read more...] about Antibody And Antigen Reaction Notes