Figure 1

Morphology of PIs and rBM-MSCs. (a) Free-floating rat islets (arrows). (b) Rat islets stained with DTZ for specificity. (c) During the onset of growth (P0-13th day), isolated cells from the bone marrow formed single-cell-derived colonies (arrows). In later passages, most of these MSCs exhibited large, flattened or fibroblast-like morphology (P1-12th day) (d) (Original magnification: a, c × 40; b, d × 200)