PMID-sentid Pub_year Sent_text comp_official_name comp_offsetprotein_name organism prot_offset 1980655-2 1990 Electrical stimulation induced tritium release from branches of human middle cerebral arteries preincubated with [3H]noradrenaline (NA), which was reduced by the alpha 2-adrenoceptor agonists, clonidine and B-HT 920, and not affected by the alpha 1-agonist, methoxamine. [3h]noradrenaline 113-130 adrenoceptor alpha 1D Homo sapiens 241-248