Statistical analysis
All the experiments were performed in triplicates. The results of all
the experimental data are presented as Mean±SEM. GraphPad Prism version
5.02 was used to do statistical comparisons employing Student’s t-test
(San Diego, CA, USA). Mean differences were analysed and * was used to
represent the comparison with unstimulated control. Differences were
considered significant at *P<0.05, **P<0.01,
***P<0.001.