Fig. 4From: Clonorchis sinensis omega-class glutathione transferases play major roles in the protection of the reproductive system during maturation and the response to oxidative stressExpression profiles of the C. sinensis GSTo1 and CsGSTo2 according to developmental stages. a Total RNAs (1 μg) extracted from each of the developmental stages were reverse transcribed as indicated on top. The mRNA transcripts of CsGSTo1 and 2 amplified by a semiquantitative RT-PCR were analyzed by 2 % agarose gels with ethidium bromide staining. C. sinensis tubulin gene (CsTub), which was shown to be constitutively expressed throughout developmental stages, was used as a control. The reaction mixture that did not contain reverse transcriptase during synthesis of the first single strand cDNA was used as a negative control. Abbreviations: Egg, C. sinensis egg; MC, metacercaria; 1 wk, 1-week-old juvenile; 2 wk, 2-week-old juvenile; 3 wk, 3-week-old immature; 4 wk, 4-week-old-mature C. sinensis. b Alteration of CsGSTo transcripts by qRT-PCR. The mRNA transcripts in each of the RNA samples (200 ng) were reverse-transcribed and the resulting cDNAs were employed in qRT-PCR as templates. The fold increase was calculated by differences in threshold cycles (ΔΔCT) of the CsGSTo1 and 2 among different developmental stages. CsTub gene was used as normalization control. c Expressional changes of CsGSTo1 and 2 proteins determined by immunoblotting probed with anti-rCsGSTo1 and 2. C. sinensis tubulin (CsTub) was employed as a control. Each lane contained 100 ng proteinBack to article page