Fig. 1From: Using low-risk factors to generate non-integrated human induced pluripotent stem cells from urine-derived cellsScreening low-risk factors for iPSC generation. a Screening strategy for the optimal plasmid combination. b Time schedule of iPSC generation. 3i = 0.5 μM A83-01, 3 μM CHIR99021, 0.5 μM thiazovivin. c AP staining to identify iPSCs. d Number of AP-positive colonies. Error bars indicate mean ± SD. *P < 0.05. P(B) = 0.038, P(C) = 0.022. AP alkaline phosphatase, D dayBack to article page