AH 3121 Study Guide - Quiz Guide: Adaptive Immune System, Complement Factor B, Tap1
Document Summary
What t lymphocytes see : b and t differ in ag recognition, t only recognize peptide fragments of protein antigens from dead microbes. Only when associated with peptide display molecules present on host cells (apc) Proteins: protein molecules have various domains, also called residues that have different functions, like transmembrane domains that span membranes. They are sheets of polypeptides termed alpha, beta, gamma, due to complex folding of these large molecules: amino acids join to form polypeptides that fold to form fully functional protein molecules. Capture and processing of antigens: immature epithelial dendritic cells, for example, capture microbes via phagocytosis and chew them up into protein peptide pieces. Produce inflammatory cytokines leading to innate response to microbes. Cause immune cells to lose adhesiveness and be able to leave the epithelium. Chemokines produced by t cells in lymph nodes attract dendritic cells to lymph nodes.
