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. 2019 Jan 14;10:190. doi: 10.1038/s41467-018-08122-9

Fig. 10.

Fig. 10

Revised model of B cell differentiation in the spleen including the BDL subset. Currently, it is thought that immature B cells exit the BM and enter the spleen where they undergo sequential differentiation into T1 then T2, which differentiate into either FO B cells or T2-MZP that upon Notch-2 signaling further differentiate into MZ B cells. BDL are a new mature B cell subset that differentiates directly from the T2 stage. Alternatively, BDL could be a subset of FO B cells or differentiate from the FO stage