showed a trendp = 0.054
Picrosirius Red (PSR) staining of histological cross-sections showed a trend towards interstitial fibrosis ( p = 0.054) ( Supplementary Figure S2J ), which was paralleled by an increased expression of the extracellular matrix proteins Collagen alpha-1(I) chain ( Col1a1 ) and Fibronectin ( Fn ) whereas Collagen alpha-1(III) chain ( Col3a1 ) and connective tissue growth factor ( Ctgf ) remained unchanged in cKO compared to WT mice ( Supplementary Figure S2K ).