Guinea pigs : Two muscle fibers with nerve connections . a, b) two nerve fibers whose transition is visible on the two end plates , e, f ); h) nuclei of the muscle fibers.

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Photo credit: © Quagga Media / Alamy / Afripics
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Keywords: animal, cavia, cute, domestic, engraving, guinea, historical, pets, pig, porcellus, rodent, tame, wood