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hRPCs expressed neurotrophic factors. The supernatants of the hRPCs were collected and detected by Quantibody Human Cytokine Antibody Array 9000. (A) The boxes show the upregulated cytokines. (B) The mean values of the 4 upregulated cytokines were: GDF-15 was 133.0 pg/ml, PDGF-AA was 336.2 pg/ml, EGF was 490 pg/ml, and NT-4 was 1420.8 pg/ml. Each value represents the mean of 3 experiments.
