Fig. 7. Assays with primary chondrocytes. (A) Normal adhesion of mutant chondrocytes to collagen type II (Col2), collagen type I (Col1), fibronectin (FN) and bovine serum albumin (BSA). The y-axis shows the adherent cells as a percentage of the total number added per well. Shown are the means±s.d. of experiments carried out in triplicate. (B) FACS analysis of integrin expression on primary chondrocytes isolated from newborn limb cartilage.