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Table 2 A matrix describing the correlation between mean gene expression profiles of amplified and unamplified M. tuberculosis total RNA from 500, 50 and 5 ng starting amounts. Spearman's rank correlations were calculated from the mean RNA signals from all M. tuberculosis H37Rv genes. Correlations in bold type highlight the relationship between differing input amounts of RNA using the same amplification method, oligo-dT or ADP. The correlations between unamplified (Unamp) and amplified products are marked in italics.

From: Microarray analysis of defined Mycobacterium tuberculosis populations using RNA amplification strategies

Sample   Oligo-dT ADP Oligo-dT ADP Oligo-dT
  (ng input) 5 50 50 500 500
ADP 50 0.865     
Oligo-dT 50 0.964 0.894    
ADP 500 0.861 0.895 0.891   
Oligo-dT 500 0.949 0.891 0.982 0.902  
Unamp - 0.838 0.788 0.838 0.840 0.839