title: [Relationship between clonidine analgesia and the calcium cation].
mesh_terms: D000700:Analgesics; D000818:Animals; D002122:Calcium Chloride / Q000494:pharmacology; D003000:Clonidine / Q000494:pharmacology*; D004533:Egtazic Acid / Q000494:pharmacology; D008297:Male; D010146:Pain / Q000503:physiopathology*; D011869:Radioligand Assay; D051381:Rats; D012684:Sensory Thresholds / Q000187:drug effects; D014700:Verapamil / Q000494:pharmacology
chemical_list: D000700:Analgesics; D004533:Egtazic Acid; D014700:Verapamil; D002122:Calcium Chloride; D003000:Clonidine