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Expression of CTHRC1 and SPARC in the lung of Pt. 3 with 13 days evolution. (A,B) No expression of CTHRC1 and SPARC in normal lung areas. Scale bar: 100 μm. (C,D) CTHRC1 (C) and SPARC (D) expression in interstitial fibroblasts in areas with early exudative diffuse alveolar damage. Scale bar: 100 μm.
