PCR analyses concerning the effects of the PAMPS and PDMAAm gel surfaces on ATDC5 cells cultured in the maintenance medium. Each bar shows the mean and the standard deviation from 6 samples. Expression of type-2 collagen (Col-2) and aggrecan genes was significantly greater on the PAMPS and PDMAAm gels than on the polystyrene surface (“PS w/o insulin” shown in the graph), and the former expression levels were comparable to the levels of the cells cultured on the polystyrene surface in the differentiation medium with insulin (“PS w/ insulin” shown in the graph).
Yoshikawa et al. BMC Musculoskeletal Disorders 2013 14:56 doi:10.1186/1471-2474-14-56