Abstract
Foetal rat diaphragm muscle fibres are sensitive to acetylcholine (ACh) over their entire length1. As the animal matures the sensitivity recedes from the tendon area towards the middle, end-plate region, of the fibres. Three to four weeks after birth the sensitive area is restricted to the end-plate region.
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HARRIS, J., MARSHALL, M. Tetrodotoxin-resistant Action Potentials in Newborn Rat Muscle. Nature New Biology 243, 191–192 (1973). https://doi.org/10.1038/newbio243191a0
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DOI: https://doi.org/10.1038/newbio243191a0
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