PMID-sentid Pub_year Sent_text comp_official_name comp_offsetprotein_name organism prot_offset 15347643-1 2004 We have previously demonstrated that vasopressin increases the water permeability of the inner medullary collecting duct (IMCD) by inducing trafficking of aquaporin-2 to the apical plasma membrane and that this response is dependent on intracellular calcium mobilization and calmodulin activation. Calcium 250-257 arginine vasopressin Rattus norvegicus 37-48