this new serum-free medium , which we call usc-hc1 , supports growth and replication , the retention of normal polygonal morphology , the expression of significant levels of cellular alkaline phosphatase activity , the production of sulfated proteoglycans , type ii collagen , and the formation of alkaline phosphatase-rich matrix vesicles by the chondrocytes .
C0007634
cellular
C0225369
chondrocytes