Facts about B-Cell Activation
- 06
CD40 ligand on helper T cells binds CD40 on B cells, a interaction essential for germinal center formation within secondary lymphoid organs.
- 05
Activated B cells can differentiate into long-lived memory B cells that persist for years and enable faster antibody responses upon re-exposure to the same antigen.
- 04
Somatic hypermutation during B-cell activation introduces random mutations into antibody variable regions, allowing affinity maturation and selection of higher-affinity antibodies.
- 03
In B-cell activation, class switching allows a single B cell to produce different antibody isotypes such as IgG, IgA, or IgE while retaining the same antigen specificity.
- 02
T helper cells provide critical co-stimulatory signals during B-cell activation, enabling full activation and differentiation into antibody-secreting plasma cells.
- 01
During B-cell activation, binding of antigen to the B-cell receptor triggers intracellular signaling cascades that lead to clonal expansion and antibody production.