PMID-sentid Pub_year Sent_text comp_official_name comp_offsetprotein_name organism prot_offset 18443849-9 2008 The sildenafil-treated group showed a significant (p < 0.05) reduction in both areas at day 7 compared to the VEGF and control groups. Sildenafil Citrate 4-14 vascular endothelial growth factor A Rattus norvegicus 113-117