Figure 2From: Microarray analysis of defined Mycobacterium tuberculosis populations using RNA amplification strategiesSpearman's rank correlation tree of the gene expression patterns from amplified and unamplified RNA. RNA was amplified from 500, 50 and 5 ng total RNA using the oligo-dT and ADP methods. All M. tuberculosis H37Rv genes were clustered using median expression ratios from 2–6 replicate hybridisations.Back to article page