Connective Tissue CellsConnective TissueFibroblastsConnective Tissue DiseasesCCN Intercellular Signaling ProteinsConnective Tissue Growth FactorMicroscopy, ElectronPlatelet-Derived Growth FactorCollagenSkinCells, CulturedMixed Connective Tissue DiseaseImmunohistochemistryRNA, MessengerNephroblastoma Overexpressed ProteinCysteine-Rich Protein 61Immediate-Early ProteinsIntercellular Signaling Peptides and ProteinsGranulation Tissue