Abstract
THE work of Dale, Feldberg and others shows in a striking way that, in the Vertebrata, excitation is transmitted from nerve to effector through the mediation of either acetylcholine or of adrenalin, according to the mode of innervation1. A sensitive test employed for the presence of acetylcholine is its power to cause contraction of the longitudinal muscle of the body-wall of the leech Hirudo medicinalis. I wish to direct attention to the fact that this sensitivity of leech muscle completes a very remarkable picture disclosed by J. F. Gaskell2.
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References
Dale, H., Brit. Med. J., 29, 3827 1934.
Phil. Trans. Roy. Soc., B, 205, 153; 1914.
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PANTIN, C. Response of the Leech to Acetylcholine. Nature 135, 875 (1935). https://doi.org/10.1038/135875a0
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DOI: https://doi.org/10.1038/135875a0
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