The human GCSAM cDNA with a V5 tag is under the control of the mouse Ly6a (Ly-6E.1) promoter to drive expression in Sca1+ hematopoietic stem/progenitor cells and Sca1+ fraction of mature B cells. Two lines were established, 102A and 102B, with no differences in the two lines. Line 102A is entered as a representative line. (J:221238)