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  • Title: The growth and development of the superior oblique muscle and trochlear nerve in juvenile and adult goldfish.
    Author: Easter SS.
    Journal: Anat Rec; 1979 Dec; 195(4):683-97. PubMed ID: 525832.
    Abstract:
    Superior oblique muscle/trochlear nerve pairs from goldfish of various ages (1-5 years) have been examined light and electron microscopically. The muscle grows by enlargement (longitudinally and transversely) of individual fibers, and by addition of new ones at the rate of about 250/year. The nerve grows by enlargement of fibers, but few and perhaps no new axons are added. The somata enlarge, and the neuromuscular synapses become much more numerous. The ratio of muscle fibers to nerve fibers increases from about 5 in the young to about 16 in the old fish.
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