Quantification by RT-qPCRof the following PDGF isoforms’ mRNA expression: A) PDGFA, B) PDGF B, C) PDGF C, and D) PDGF D from untreated control (“C”), T1-treated (“T1”), and T3-treated (“T3”) RbCF 3D constructs. Beta-actin was used as the housekeeping gene. Expression was normalized to the unwounded controls, “C”. (n = 3, *p < 0.05).