Figure 2: Hierarchical clustering analysis of gene expression of freshly isolated hepatocytes-1, -2, and -3, ML-1, -2, and -3, SW-1, -2, and -3, and NP-1, -2, and -3. The clustering is based on all the 22,596 probes that passed quality filtering. Data were subjected to HCA by using a Euclidian-distance calculation based on the centroid-linkage rule.