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PKR promotes migration of RF/6A cells in a coculture system under hypoxic conditions. A: Crystal violet staining detected the migrated cells of each group: normal, hypoxic, scramble siRNA, and dsRNA-activated protein kinase (PKR) siRNA. Representative photographs of migrated RF/6A cells (200× magnification). B: The average number of migrated RF/6A cells per field. *p<0.01, PKR siRNA group versus the hypoxic group. Values represent means ± SD.
