PMID-sentid Pub_year Sent_text comp_official_name comp_offsetprotein_name organism prot_offset 19821999-10 2009 Incubation of MDA-MB-231 cells with BU-32 results in the accumulation of cell cycle inhibitor proteins p21 and p27 and stabilization of the tumor suppressor protein p53. Busulfan 36-38 H3 histone pseudogene 16 Homo sapiens 103-106