PMID-sentid Pub_year Sent_text comp_official_name comp_offsetprotein_name organism prot_offset 9647183-9 1998 Transfection with p53 had only a minor effect on the plating efficiency of nonirradiated U87MG cells, reducing the plating efficiency from 0.23 +/- 0.01 in DMEM to 0.22 +/- 0.04 after addition of Ad5CMV-p53. dmem 156-160 tumor protein p53 Homo sapiens 18-21 9647183-20 1998 Infection of U87MG cells with Ad5CMV-p53 only resulted in an increase in p21 compared with DMEM- and dl312-treated cells. dmem 91-95 tumor protein p53 Homo sapiens 37-40