Histologic images of human meniscus cells cultured under control conditions in the 3D collagen sponge. A. Arrows show good attachment of cells to the sponge surface. B. * denotes concentration of ECM. C. Margin shows a tight layer of cells along the perimeter of the sponge. (Paraffin embedded toluidine-blue stained specimens; for all images, bar = 50 μm).
Gruber et al. BMC Biotechnology 2008 8:54 doi:10.1186/1472-6750-8-54