Assertion: periosteum's cell | /r/HasProperty | osteoprogenitor cells
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Source sentences:
text: Recent studies using green fluorescent protein (GFP) reporter mice have shown the sequence of events leading to this intramembranous ossification, but it is still unclear whether the cells involved are only osteoprogenitor cells or also include pericytes and dedifferentiated lining cells.43
text: The periosteum contains a layer of undifferentiated cells (osteoprogenitor cells) that later become osteoblasts.