PMID-sentid Pub_year Sent_text comp_official_name comp_offsetprotein_name organism prot_offset 2170382-3 1990 In the presence of extracellular Mn2+, the Ca2(+)-mobilizing hormone vasopressin produced a severalfold stimulation of the basal rate of fura-2 fluorescence quenching as a result of Mn2+ influx; this effect was blocked by the presence of Ni2+ in the incubation medium. Fura-2 137-143 arginine vasopressin Rattus norvegicus 69-80