HTHSCI 1DT3 Lecture Notes - Lecture 1: Intramuscular Injection, Tumor Necrosis Factor Alpha, Ontogeny
27 Jun 2016
School
Department
Course
Professor
Document Summary
Antigens usually very complex chemical composition of epitones. Innate immune responses can"t tell difference between different bacteria; natural killer cells to battle cancer. Interactions due to receptors between molecules, calls, cell surface receptors. T cells and subsets: master control cell of adaptive immune system. Resting helper t cell in blood, sytocines = t helper cells. T killer cells after activated are effector cells, e. g kill virus infected or tumour cell, release enzymes that kill cell, can be activated to a higher degree than nk cells. T cells contact dendritic cells (presents antigen) as well as b cells (present antigen to t cell) T cell receptors all the same recognize one epitope. Killer cells cytotoxic ts and nks; causes death after contact, one example grenzime injection. Including b cell receptors (antibody) have receptor, antibody, has specific specificity (detects on epitope), many different b cells that have different specificities on surface. Antigen receptors: b cell, killer cell, helper t cell.
