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  • Title: Scanning electron microscope study of the developing trout pelvic fin bud.
    Author: Géraudie J.
    Journal: Anat Rec; 1978 Jul; 191(3):391-4. PubMed ID: 677492.
    Abstract:
    The growth of the pelvic fin bud has been studied with the SEM along with the characteristics of the pseudoapical epidermal ridge which occupies the free margin of the bud. SEM revealed fluffy protuberances in many of the epidermal cells, distinguishing the fin bud territory from adjacent areas. When the pseudoapical ridge appears, all the cells show this feature but their relative number decreases and these cells, termed the "tassel cells," are finally restricted to the base of the fin bud. This particular surface structure of the superficial cells may be unique to the fish, since it has not been heretofore reported in SEM studies of tetrapod limb bud.
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