Figure 6.

Photomicrographs of collagen immunohistochemical staining of week 5 aggregates from a representative donor. (A): Photomicrographs of Col II immunohistochemical staining of week 5 aggregates from donor B. (B): Photomicrographs of Col I immunohistochemical staining of week 5 aggregates from donor B. Scale bar = 500 μm. All images are at the same scale. Abbreviations: BMP, bone morphogenetic protein; Col, collagen; exo., exogenous; GM, gelatin microparticle; MCM, mineral-coated hydroxyapatite microparticle; TGF, transforming growth factor.