WebClonal selection is a process by which the body produces B and T cells to respond to infections. These cells each have unique receptors that allow them to identify specific pathogens. When the body encounters an infection, the B and T cells that can recognize the invader multiply rapidly to create an army of cells to fight it. WebEffector B cells are called plasma cells and secrete antibodies, and activated T cells include cytotoxic T cells and helper T cells, which carry out cell-mediated responses. The production of effector cells in …
Co-stimulation - Wikipedia
WebJun 25, 2013 · B cells are key components of the adaptive immune response. Their differentiation into either specific memory B cells or antibody-secreting plasma cells is a consequence of activation steps … WebT and B cells differ in one fundamental way: whereas T cells bind antigens that have been digested and embedded in MHC molecules by APCs, B cells function as APCs that bind intact antigens that have not been processed. how to stop stomach heat
B Cells (B Lymphocytes) - The Definitive Guide Biology …
WebRecent studies show that naive T cells only respond efficiently to dendritic cells and activated B cells whereas memory and effector cells respond to all APC types to some extent, including resting B cells. WebThe role of B cells as antigen-presenting cells (APCs) has been extensively studied, mainly in relation to the activation of memory T cells. Considering the B cell subtypes, the role of B-1 cells as APCs is beginning to be explored. Initially, it was described that B-1 cells are activated preferentially by T-independent antigens. However, some reports … WebThe engagement of the BCR by the antigen in combination with costimulatory signals is required to deliver survival signals rescuing from apoptosis B cells which display high-affinity Ig receptors on their surface. how to stop stomach gurgling and diarrhea