Related Experiment Video
Updated: Jan 19, 2026

Author Spotlight: Optimized Protocol for Detecting Antigen-Specific T Cells in Mouse Lungs Using Tetramers
Published on: July 19, 2024
Preferential pairing of T-B specificities in the same antigen: the concept of directional help
1Cattedra di Immunologia, Universita di Genova.
It is important for an effective planning of the new generation of vaccines to consider that the eventual response is regulated by the interplay of stimulating and suppressing epitopes, resulting in dominance of certain sites over others, and that in order for a molecule to be crossimmunogenic with the outside invader both B and T epitopes must be present. However, T-B cooperation is not random but is guided by preferential pairing of sites within a single macromolecule; this situation can be explained by antigen processing by B cells and paratope mediated interference with endosomial degradation.
It is important for an effective planning of the new generation of vaccines to consider that the eventual response is regulated by the interplay of stimulating and suppressing epitopes, resulting in dominance of certain sites over others, and that in order for a molecule to be crossimmunogenic with the outside invader both B and T epitopes must be present. However, T-B cooperation is not random but is guided by preferential pairing of sites within a single macromolecule; this situation can be explained by antigen processing by B cells and paratope mediated interference with endosomial degradation.
Related Concept Videos
Cross-reactivity
Special Features of Adaptive Immunity
The primary cell types involved in adaptive immunity are T cells and B cells. Each type has a unique role in defending the body against pathogens. T cells are responsible for cell-mediated immunity. They identify and eliminate infected cells directly,...
T Cell Activation and Clonal Selection
Naive T cells that have not yet encountered an antigen express two primary CD...
Diversity of Antigen Receptors
Before encountering any antigen, lymphocytes express these receptors. On B cells, the antigen receptor is a membrane-bound antibody molecule called BCR; on T cells, it is a T cell receptor or TCR. B and T cell receptors are composed of two...
Antigens Involved in Adaptive Immunity
Complete Antigens
Complete antigens possess both immunogenicity and...
B Cell Activation and Differentiation
When naive B cells encounter a specific antigen that can bind to the B cell receptor (BCR) on their surface, they undergo sensitization to respond to the antigen's presence. Sensitization begins with...

