Assertion: periosteum's cell | /r/HasProperty | green fluorescence
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Source sentences:
text: Dead staining, and the cells in the GelMA group, GelMA/MBGN group, and GelMA-G-MBGNsgroup were all well-lived, and most of them were live cells (green fluorescence) at 7 and 21 days, with good morphology and few dead cells (red fluorescence).