Figure 1. HeLa cells were exposed to 0.5 µM of thapsigargin for 8 h and the mRNA expression levels of the indicated ATG genes were quantitatively detected using TaqMan real-time RT-PCR. GAPDH was used as an internal standard. The means ± standard deviations (SDs) are shown as the relative fold-induction when the values obtained in DMSO-treated cells were set as 1 (horizontal broken line). *P < 0.05 (n = 2). ND indicates no signal was detected.