Question

When a new antigen first challenges the immune system, if the primary immune response produce B cells, what are the fates of those B cells?

Answer 1

Some B cells will continue to produce antibodies for years to come, making fighting the antigen much easier to fight on any subsequent re-infections.

Explanation:

The Immune System in the Human Body is made of 2 component systems: the "innate" system and the "adaptive" system. The innate system is designed to kill anything that is in a place it isn't supposed to be. The adaptive system targets specific invaders and produces antibodies to prevent reinfection from an invader.

B cells are immune cells that are made in bone marrow (thus the B. The other type of adaptive immune cell is the T cell, which is made in the Thymus). Some B cells that are part of an immune response will become "memory B cells" and will continue to produce antibodies for years to come, making fighting the antigen much easier to fight on any subsequent re-infections.