PMID-sentid Pub_year Sent_text comp_official_name comp_offsetprotein_name organism prot_offset 226714-6 1979 When water transport was activated (0.1 mM 8 Br-cAMP) sigma urea approached 1.0 sigma urea also approached 1.0 at high vasopressin concentrations. 8-Bromo Cyclic Adenosine Monophosphate 43-52 arginine vasopressin Homo sapiens 119-130