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PKR promotes proliferation of RF/6A cells in a coculture system under hypoxic conditions. Detected with the cell counting kit 8 (CCK 8) assay, hypoxia increased RF/6A cell proliferation in the coculture system, whereas RF/6A cell proliferation was suppressed dramatically with dsRNA-activated protein kinase (PKR) silencing. *p<0.05, statistically significantly different compared to the respective controls. Values represent means ± SD.
