The top 40 discriminating genes with the highest distinction values for AS or NC groups. Twenty genes that were specifically (A) upregulated or (B) downregulated in patients with SARS. Another twenty genes that were non-specifically (C) upregulated or (D) downregulated by both bacterial infection and SARS. Each column represents an individual sample and each row represents a gene. The color range reflected relative change according to the scale shown. NC, normal control; IN, bacterial infection; AS, acute SARS. GMRCL clone numbers of some ESTs are also included in the parentheses.