Figure 3.

Comparison of transcripts quantified by conventional RNA gel-blot versus cDNA microarray methods. Selected cDNA ESTs that microarray analysis indicated were up-regulated, down-regulated, or unchanged by water stress were used as probes in gel blots with 5 μg of total RNA from placenta tissue. The gene names or GenBank accession numbers of ESTs are presented with images of control (C) and water stress (W) ³²P signal. Plots indicate the digitized signals (arbitrary scale) obtained for control (gray) and water stress (black) samples using RNA gel-blot and microarray methods.