Animals 4 Ascorbic Acid 4 Dose-Response Relationship, Drug 4 allosterism 4 article 4 ascorbic acid 4 controlled study 4 human 4 priority journal 4 protein expression 4 ACTIVACION DEL RECEPTOR 3 ALLOSTERIC MODULATION 3 AUTOANTIBODIES 3 AUTOANTICUERPOS 3 Allosteric modulator 3 CHAGAS 3 DISAUTONOMIA 3 DYSAUTONOMIA 3 M2 MUSCARINIC RECEPTOR 3 MODULACION ALOSTERICA 3 RECEPTOR ACTIVATION 3 RECEPTOR MUSCARINICO M2 3 SEÑALIZACION 3 SIGNALING 3 4 aminobutyric acid 2 4 aminobutyric acid A receptor 2 4 aminobutyric acid A receptor blocking agent 2 4 aminobutyric acid receptor 2 4 chloro n (3 quinuclidinyl)benzamide 2 Adaptive immune response 2