Figure 2From: DNA microarray analysis of Salmonella serotype Typhimurium strains causing different symptoms of diseaseUPGMA dendrogram. UPGMA dendrogram calculated on microarray results as binary coefficients by simple matching, markers for serotype and resistance are not included. Each marker is listed along the horizontal top of the dendrogram, and a black line in the figure represents a positive hybridisation and thus gene present. Four clusters indicated by letters A-D. M = Mild symptoms, S = Severe symptoms, O = Outbreak.Back to article page