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Representative phase images at 5× magnification of CFU-Fs after 7 days from seeding. CFU morphology of BM-MSCs cultivated in HPL-E (A) and in HPL-S (B). In (C), blue and red dots report CFU-F/106 cells of BM-MSCs batches with HPL-E and HPL-S, respectively. No significant differences were observed.
