Development of B cells, white blood cells that make antibodies, follows a progression of stages: common lymphoid progenitors, pre-pro-B cells, pro-B cells, pre-B cells, immature B cells, and then more mature and specialized B cells. By the time the development hits the pro-B stage, the cell is fated to stay a B cell rather than another type of cell.
This article was originally published on MedicalXpress.com