At the first instance I was surprised to know that B cell development is different and independent (?) of B cells/progenitors from bone marrow. It is also shown that the thymic B cells are released into circulation (~ 2 x 10^4 cells/day) as per literature. But the role of these B cells in circulation is not clear, at least to me, as per the existing literature. It would be nice if people can use this platform to discuss and update on thymic B cell development, their identification and their role in circulation.