title: Effect of duration and frequency of stimulation on the presynaptic inhibition by alpha-adrenoceptor stimulation of the adrenergic transmission.
mesh_terms: D000316:Adrenergic alpha-Agonists / Q000037:antagonists & inhibitors / Q000494:pharmacology*; D000814:Aniline Compounds / Q000494:pharmacology; D000818:Animals; D003000:Clonidine / Q000494:pharmacology; D004558:Electric Stimulation; D006168:Guinea Pigs; D006321:Heart / Q000187:drug effects*; D006325:Heart Atria / Q000187:drug effects; D066298:In Vitro Techniques; D008297:Male; D009433:Neural Inhibition / Q000187:drug effects*; D009638:Norepinephrine / Q000494:pharmacology; D010646:Phentolamine / Q000494:pharmacology; D051381:Rats; D009435:Synaptic Transmission / Q000187:drug effects*; D013843:Thiazines / Q000494:pharmacology; D013997:Time Factors; D014316:Tritium; D014649:Vas Deferens; D014992:Xylenes / Q000494:pharmacology
chemical_list: D000316:Adrenergic alpha-Agonists; D000814:Aniline Compounds; D013843:Thiazines; D014992:Xylenes; D014316:Tritium; D003000:Clonidine; D009638:Norepinephrine; D010646:Phentolamine