Figure 3

Dissimilarities of mouse SAGE libraries illustrated by a dendrogram. Thirty-two SAGE libraries constructed from bulk tissues containing 190 871 unique tags (including single copy tags) were selected (see Additional file 4). Pairwise library distances based on differences between normalized tag counts were computed according to [28]. The average agglomeration method was used in hierarchical clustering due to the highest cophenetic correlation (0.936) between observed and predicted distances resulting from the dendrogram. The number of tags in each SAGE library is indicated.