955351 ETR endothelin receptor 25 955348 ETR ET receptor 16 955349 ETR ET-resistant 4 955352 ET-R ET resistance 2 955350 ET-R endocrine therapy-resistant 1 955353 ET-R ET(B) receptor 1 955354 ET-R ET-1 and its receptors 1 955355 ET-R pan-ET-receptor 1