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CVOCA releases more TGF-β over time than flash frozen OCA. TGF-β1 (A) and TGF-β2 (B) content in media collected from CVOCA and flash frozen OCA culture at various time points. The CVOCA releases more of the chondrogenic growth factors initially (day 7) and over time (up to 21 days) relative to the flash frozen OCA. Data presented as mean ± SEM for three independent experiments
