Morphologies of mMSCs. mMSCs from Bl/6 mice: (A) passage 0, (B) passage 1, and (C) passage 5. Low-density plating to show the morphology of passage 7 mMSCs from the mouse strains: (D) Bl/6, (E) BALB/c, (F) FVB/N, (G) DBA1, and passage 4 GFPtg, phase contrast (H) and epifluorescence (I). Original magnification, × 10.