Assertion: osteoclast's level | /r/HasProperty | experienced by cell
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Source sentences:
text: However, because it was not possible to devise hypoxic culture vessels that eliminated entirely the inward leakage of atmospheric O 2 , it is not clear whether the effective PO 2 levels experienced by cells could be approximated roughly as the mean of the initial and 24 h PO 2 values, or whether the initial exposure to the lower PO 2 levels was of particular importance.