2798485 GRPR gastrin-releasing peptide receptor 571 2798489 GRPR GRP receptor 65 2798495 GRPR gastrin-releasing peptide-preferring bombesin receptor 8 2798498 GRP-R GRP and its receptor 4 2798503 GRP-R GRP-preferring receptor 2 2798506 GRP-R GRP-preferring/bombesin receptor 2 2798507 GRP-R gastrin releasing peptide 1 2798502 GRP-R GRP than for NMB 1 2798505 GRP-R GRP, which binds to its cell surface receptor 1 2798504 GRP-R GRP-R KO 1