Fig. 2From: The overexpression of peroxiredoxin-4 affects the progression of idiopathic pulmonary fibrosisChanges in serum PRDX4, KL-6, SP-D, and LDH levels in patients with S-IPF and AE-IPF. a) A significant increase in serum PRDX4 protein level was observed at AE-IPF diagnosis compared with that at S-IPF diagnosis. b, c, and d) The increase in serum KL-6, SP-D, and LDH level at AE-IPF diagnosis was not significant compared with that at S-IPF diagnosisBack to article page