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a Morphology of uninduced MSCs. Microtubules (shown in green); actin filaments (in red); nucleus (in blue). b Morphology of MSCs treated with 10 μM forskolin and 100 μM IBMX (FI) for 1 h. c–f Live cell images of cells treated with FI for 15 min (c), 30 min (d), 45 min (e) and 60 min (f)
