if a T Cell recognizes an antigen that a B Cell presents to them, it stimulates the B Cell. This stimulation is like a gentle kiss or a warm encouraging hug. Not only does this prolong the life of the B Cell, it also motivates it to try to improve the Antibody! Every time a B Cell receives a positive signal from a Helper T Cell, it begins a round of purposeful mutation. This process is called Somatic Hypermutation (also known as Affinity Maturation) and we will never use this clunky term again.
