Figure 2.
Real time RT-PCR analysis of expression levels of chondrogenic and hypertrophic genes in chondrocytes growing on TCP for 10 days (day 10 TCP), or on ECM for 6 days (day 6 ECM), both of which have undergone similar rounds of proliferation or population doubling. Collagen type II stands for COL2A1, and collagen type I stands for COL1A2. Results are normalized to those in cells prior to seeding, and shown as mean ± SD (*, p<0.05; **, p<0.01).