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To the Editor.
—I have just concluded reading Dr Simmons Lessell's annual review on neuro-ophthalmology (the Archives 93:434, 1975). As always, I enjoyed reading it and have learned much.There is a minor error in his report on our study of the receptors of the myasthenic neuromuscular junctions. The labeled alpha-bungarotoxin is derived from a snake called the manybanded krait, Bungarus multicinctus, and not from the cobra. The cobra also produces a neurotoxin. The cobra toxin also binds with the receptors, but the binding is believed to be reversible, unlike the bungarotoxin. In fact, the block caused by the cobra alpha-toxin in vivo in animals has some similarities to the myasthenic neuromuscular transmission (Science 187:955, 1975).
Satya-Murti S. Acetylcholine Receptors and Alpha-bungarotoxin. Arch Ophthalmol. 1976;94(2):339. doi:10.1001/archopht.1976.03910030177022
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