Figure 7

Comparison view of composite cDNA Expression Arrays. We analyzed differences in the relative abundance of transcript levels in control and 100 μg/ml SN50-treated E15 + 2 explants. This composite represents the changes in 3 independent experiments. It consists an array of boxes, each of which represents a specific gene. For a complete list of the genes and their position on this Expression Array, as well as the GenBank accession numbers, please see http://atlas.clontech.com. The color of each half-box reflects the calculated values for Gene Expression Ratio (top) and Gene Expression Differences (bottom): Red = upregulation; Blue = downregulation; Green = equal expression; Black = background level. Comparison is made between two composite arrays, each of which is a mean of 3 independent arrays. The signals of the composite SN50-treated SMG array is analyzed with respect to the composite control SMG array. In this comparison view, boxes which are black in the upper half indicate an "undefined" ratio because the signal for the SN50-treated SMG array is at the background level (i.e. signal intensity is less than the signal threshold, namely no evidence of gene expression).