PMID-sentid Pub_year Sent_text comp_official_name comp_offsetprotein_name organism prot_offset 19743842-4 2009 Incorporation of chitosan in PCL nanofibers not only improved the adhesion and proliferation of MC 3T3-E1 cells but also elevated calcium deposition, alkaline phosphatase (ALP) activity, and the expression of osteopontin (OPN) compared to PCL alone nanofibers. polycaprolactone 239-242 secreted phosphoprotein 1 Mus musculus 209-220