Starting at birth, the immune system programs immature B-cells to produce antibodies against a wide array of potentially pathogenic antigens by shuffling genes for different antibody components. This shuffling process, called V(D)J recombination, depends on a factor called RAG, which results in an immense number of B-cells that collectively are able to respond to a diverse repertoire of antigens that the immune system has yet to encounter.
Study finds that microbes influence B-cell development in the gut
Image credits: Duane Wesemann
Art and Science of Laboratory Medicine