PSL301H1 Lecture Notes - Lecture 4: T Helper Cell, Antigen-Presenting Cell, Mhc Class Ii

• School: UTSG
• Department: Physiology
• Course: PSL301H1
• Professor: French, Gramolini, Richardson, Wong

Document Summary

Recall: acquired immunity depends on both b cells and t cells the focus here are t cells and t cell receptors bind to antigens that are bound to mhc (major histocompatibility complex) How are t cells activated: biological responses that occur in the t-cell interaction between the t lymphocyte of the cell and the. Mhc + antigen complex activate the t cell: there are two main classes of t cells focused key types. Key types of t cells: both of these t cell types have t cell receptors that can recognize different types of antigens. Mhc class ii proteins: these proteins are produced by only a subset of cells in the body - located on dendritic cells, Helper t cells: has another molecule that is membrane bound called. Professional antigen presenting cells presents exogenous (proteins, polysaccharides not made by the cell but taken in) antigens.