Fig. 1From: Polymorphisms in interleukin 17A gene and coal workers’ pneumoconiosis risk in a Chinese populationTwo constructs were transiently transfected into A549 and HBE cells, respectively. Luciferase activity of each construct was normalized against internal control of Renilla luciferase. Data indicated mean values with SD from 3 independent experiments. *P < 0.05 compared with construct counterpartBack to article page