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hCPCs maintain normal function under hypoxia. hCPCs were cultured under 21, 5, and 1% O2. (A) XTT assay for cell proliferation shows that cells maintained a similar level of proliferation over 24 h. Data represents mean ± SD, n = 4. (B) Flow cytometry for Annexin V/PI show that cells are equally healthy under the various oxygen conditions as the number of non-apoptotic/non-necrotic cells remains similar after 48 h of culture.
