Figure 2 Antibody responses to specific epitopes expression pattern in SARS patients. The rows represent patient serum samples, arranged in ascending order from the day of onset of the disease. The columns represent antibody to each of the epitopes studied. The fluorescence signals for IgM (A) and IgG (B) were measured, and the dendrogram was created by hierarchical clustering analysis. Group 1 is the clinically affected SARS patients from day 6 to day 103 (top to bottom). Group 2 is the convalescence patient recovered and the serum collected >180 days after illness. Group 3 are non‐SARS controls. The colour bar represents the intensity of the fluorescence signals.