Fig. 2
From: Poplar protease inhibitor expression differs in an herbivore specific manner
Expression of Kunitz-type trypsin inhibitor (KTI) genes in black poplar leaves after feeding by gypsy moth caterpillars (L. dispar) or blue willow beetles (P. vulgatissima) compared to their respective controls (Control 1 and 2), and compared to actin (ACT) and elongation factor 1-α (EF1-α) as constitutively expressed ‘house-keeping genes’. Shown are the mean RPKM (reads per kilobase of transcript per million mapped reads; n = 4) as result of the transcriptome analysis