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TGFβ1 recovery from photopolymerized acrylate solutions. (a) In nongelling monoacrylate solutions, TGFβ1 recovery is highest at high acrylate concentrations, as measured by ELISA. (b) Bioactivity assays across the same acrylate concentration range show a maximum at intermediate concentrations, as determined by reporter cell assay. Error bars represent standard error (n = 4).
