PMID-sentid Pub_year Sent_text comp_official_name comp_offsetprotein_name organism prot_offset 23865889-0 2013 Formation of nitro-PAHs from the heterogeneous reaction of ambient particle-bound PAHs with N2O5/NO3/NO2. nitrogen pentoxide 92-96 NBL1, DAN family BMP antagonist Homo sapiens 97-100