Fig. 4From: RNA-sequence data normalization through in silico prediction of reference genes: the bacterial response to DNA damage as case studyExpression profile of LexA-dependent genes. a Volcano plots depicting log2 ratios and p-values (negative log10) for different comparisons. The 58 LexA-dependent genes are highlighted in black (30-to-0-min comparison), green (90-to-0-min comparison), and orange (90-to-30-min comparison). b The log2 ratios of 30 LexA-dependent genes were correlated with their respective heterology index (HI) as calculated by Courcelle and colleagues [14]. R, Pearson’s rhoBack to article page