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Sigmoidal curve fits of (a) sGAG, (b) collagen, and (c) NIR-derived cartilage matrix data suggest a similar trend in longitudinal development. First derivatives of fitted curves for (d) sGAG, (e) collagen, and (f) NIR-derived cartilage matrix suggest that the maximum rate of construct maturation occurs at week 2, 2.1, and 2.2, respectively. Color images available online at www.liebertpub.com/tea
