The mean relative expression of A) the V-type proton ATPase 16 kD proteolipid subunit (OnVha16), and B) the V-type proton ATPase subunit H (OnVhaSDF) target genes after incubation of excised midguts from fifth instar ECB larvae in media containing various concentrations (50, 100, and 150 ng/μl) of either dsOnVha16, dsOnVhaSFD, or dsGFP. Means that do not share a letter are significantly different.