Figure 6: Immunohistochemistry for S100 (red; cell nuclei stained in blue with DAPI)
Cartilage microtissues stained for S100 after two and four weeks in culture. A/E: basal medium (bm), B/F: bm + TGF-ß1, C/G: bm + TGF-ß2, D/H: bm + TGF-ß1 + BMP-7. 10x objective; scale bars = 200 μm.