title: Deal watch: Merck bets on purine receptor revival.
authors.forename: Megan
authors.initials: M
authors.lastname: Cully
mesh_terms: D000818:Animals; D002986:Clinical Trials as Topic; D004345:Drug Industry / Q000191:economics / Q000639:trends*; D006801:Humans; D011983:Receptors, Purinergic / Q000187:drug effects*; D018048:Receptors, Purinergic P2 / Q000187:drug effects
chemical_list: D011983:Receptors, Purinergic; D018048:Receptors, Purinergic P2