Antigen processing and presentation is the process by which antigen-presenting cells express antigen on their cell surface in a form recognizable by lymphocytes.
Antigen processing includes protein fragmentation (proteolysis), association of the fragments with MHC (major ...
The haemostatic system maintains blood in a fluid state under normal conditions and responds to vessel injury by the rapid formation of a clot consisting of platelets and Fibrin. The traditional view of the regulation of blood coagulation is that the initiation phase is triggered by an extrinsic ...