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Induction and repression of the three validated genes (A, B, C). The graphs display the results of the quantitative PCR of the differential gene expression related to the HPRT1 gene in HeLa cells 24h after treatment; the abscissae show the investigated transporter peptides (
pAnt, 
HIV-TAT, 
TP6287, 
TP6288, 
HiPerfect transfection tool, and the 
pHPMA polymer); the ordinates represent the linear ratio of differential gene expression.
