Figure 1.

Phase contrast images of C57BL/10 MSCs (A-E) and mdx MSCs (F-I). Passage 0 (A, F), passage 9 (B, G), passage 19 (C, H), passage 25 (D, I), and passage 40 (E). Round cells (A-I: thin black arrows). Spindle-shaped cells (A-I: arrowheads). Cells in Fig. G were more spindle-shaped than those in Fig. B. Cells in Fig. H to Fig. C showed the same result. Mesh and net formation was observed between the cells in Fig. I (pentagram). Scale bar, 200 μm.

Li et al. BMC Cell Biology 2008 9:24   doi:10.1186/1471-2121-9-24
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