No title
Phenotypically and functionally distinct progenitors and developmental pathways have been proposed to exist for fetally-derived B-1 and conventional B-2 cells. Although IL-7 appears to be the primary regulator of fetal and adult B lymphopoiesis in mice, considerable fetal B lymphopoiesis and postnatal B-cells are sustained in the absence of IL-7, and in man B-cell generation is suggested to be lar
