Genes with cell line-specific phenotypes are not differentially expressed. Chart of the expression levels of CG7236, mnb and Pvr in S2R+ and BG3-c2 cells as measured by Q-PCR. Expression levels were established by taking the ratio of expression of each gene compared to the control ribosomal component rp49 in three independent experiments. The error bars represent the standard error in the mean across those experiments. Plus sign indicates RNAi treatments that resulted in an observed phenotype.