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  • Title: Ultrastructural changes in the urophysis of Mollienesia sphenops following adaptation to seawater.
    Author: Kriebel RM.
    Journal: Cell Tissue Res; 1980; 207(1):135-42. PubMed ID: 7388907.
    Abstract:
    The urophysis or neurohemal contact site of the caudal neurosecretory system of Mollienesia sphenops, the black molly, was studied in animals adapted to an artificial seawater environment. This species of fish was chosen for these studies because of its known ability to osmoregulate and its adaptability to the laboratory aquarium. The urophysis of freshwater acclimated mollys contained an abundance of neurosecretory granules. However, in fish subjected to a seawater environment for one week the number of neurosecretory granules was significantly decreased. In addition, there was an increase in blood cell infiltration of the urophysis.
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