Direct determination of acetylcholine release by radioimmunoassay and presence of presynaptic M₁ muscarinic receptors in guinea pig ileum

Medicine & Life Sciences

• Muscarinic M1 Receptors 100%
• Pirenzepine 95%
• Muscarinic Receptors 75%
• Atropine 70%
• Ileum 70%
• Radioimmunoassay 64%
• Acetylcholine 64%
• Guinea Pigs 60%
• Presynaptic Receptors 47%
• Krebs-Ringer solution 23%
• Nerve Endings 20%
• Cholinesterase Inhibitors 19%
• Electric Stimulation 15%
• Muscles 10%