T6 cells derived from Tr/Tr mice are Sca1⁺ stem/progenitors. (A) Flow cytometric analysis of H9 cells (derived from H/H tumors) and T6 cells (derived from Tr/Tr tumors) stained with anti-cKit and anti-Sca1 antibodies. (B) T6 cells are bipotent cells. Flow cytometric analysis of T6 cells stained with anti-CD19, anti-B220, anti-Gr1, and anti-Mac1 antibodies. (C) Flow cytometric analysis of H1, H9, and T6 cells stained with anti-CD71 and anti-cKit antibodies.