Columbia subject headings:
Acetylcholine--Metabolism--Congresses.
Acetylcholine--Receptors--Congresses.
Parasympathomimetic agents--Testing--Congresses.
Synapses--Congresses.
Harvard subject headings:
Acetylcholine--Metabolism--Congresses.
Acetylcholine--Receptors--Congresses.
Parasympathomimetic agents--Testing--Congresses.
Synapses--Congresses.
Princeton subject headings:
Acetylcholine--Metabolism--Congresses.
Acetylcholine--Receptors--Congresses.
Parasympathomimetic agents--Testing--Congresses.
Synapses--Congresses.