MZB1 and bronchiolitis obliterans syndrome: They also performed pseudo-time and trajectory analysis, based on which they found that a Bhlhe41, Cxcr3, ITGB1-triple positive-B cell subset plays as the progenitor pool for Mzb1+ PCs, which results in IgG2c expression and production in the grafts with bronchiolitis obliterans syndrome.