The study was approved by the Tel Aviv University Institutional animal care and use committee and performed in compliance with their guidelines. Proteins and antibodies Mouse PCPE-1 (mPCPE-1) was purified from culture media of 3T6 mouse fibroblasts by ammonium sulfate fractionation, gel-filtration, lysyl-Sepharose chromatography and affinity chromatography on Sepharose coupled to the C-propeptide of type […]