Hybridization profiles of HRV and HEV serotypes from RPM-Flu v.30/31 microarrays. (A) 34 HRV serotypes were classified into two clusters corresponding to species HRVA and HRVB; (B) 29 HEV serotypes (including HRV87) were classified into two clusters corresponding to HEVA/B and HEVC/D species. Base call rates (number of base calls/probe length in each tile) generated from viral samples (rows) and prototype probes (columns) were calculated and clustered using dChip software. Rows standardized base call rates. Positive hybridization was represented by red color. Higher base call rates were shown as brighter red colors. Negative hybridization (no base call) was represented by green color. The sample HRV87 is underlined.