PMID-sentid Pub_year Sent_text comp_official_name comp_offsetprotein_name organism prot_offset 21468191-1 2010 When the concentration of sodium (Na(+)) in arterial plasma (P(Na)) declines sufficiently to inhibit the release of vasopressin, water will be excreted promptly when the vast majority of aquaporin 2 water channels (AQP2) have been removed from luminal membranes of late distal nephron segments. Sodium 26-32 arginine vasopressin Rattus norvegicus 116-127