Fig. 1From: The significance of serum S100 calcium-binding protein A4 in silicosisSerum levels of S100A4 in subjects. a, b The secretion of serum S100A4 in control group and silicosis patients was detected by ELISA. CG, control group; SI, stage I of silicosis; SII, stage II of silicosis; SIII, stage III of silicosis. *p < 0.05Back to article page