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  • 1
    Electronic Resource
    Electronic Resource
    The migration of myogenic cells from the somites into the leg region of avian embryos (1979)
    Springer
    Anatomy and embryology 157 (1979), S. 291-309 
    Details
    ISSN: 1432-0568
    Keywords: Chick embryo ; Leg bud ; Cell migration ; Myogenic stem cells
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary The migration of myogenic stem cells into the leg anlagen of chick embryos between stages 16–20 of Hamburger and Hamilton was examined. SEM and TEM studies reveal that cell migration starts at stage 16 from the just-formed somites 26–28. The migrating myogenic cells are elongated and oriented in a medio-lateral direction. The leading ends branch into filopodia which contact a fibrillar network. At first, single cells migrate; later on the cells leaving the ventro-lateral edge of the dermatome migrate in strands and have specialized contacts between them. After reaction with ruthenium red and concanavalin A the migrating cells show a thick surface coat to which ruthenium red-positive particles are attached. The surface coat may be important in the interactions among the migrating cells as well as between the cells and the substrate. The migration of myogenic stem cells was found to take place in a matrix of collagenous fibrils and ruthenium red-positive particles, probably containing glycosaminoglycans. At the onset of migration the fibrillar network exhibits a preferred mediolateral orientation. Therefore, it may be concluded that this alignment of the fibrils influences the direction of cell migration.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00304995
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    On the migration of myogenic stem cells into the prospective wing region of chick embryos (1978)
    Springer
    Anatomy and embryology 153 (1978), S. 179-193 
    Details
    ISSN: 1432-0568
    Keywords: Chick embryo ; Origin of wing musculature ; Myogenic stem cells ; Cell migration ; Collagen fibrils
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary In chick embryos undifferentiated myogenic stem cells migrate from the ventrolateral somite respectively dermatome edge into the prospective wing region after the second day of incubation. At first, single cells that are elongated in mediolateral direction, later also small groups of cells, are found in the space between somites and somatopleura at the wing bud level. The leading ends of the migrating cells are formed like finger-shaped lobopodia as well as flattened lamellipodia from which thin filopodia arise. The main structural features of the cell processes are microtubules and microfilaments predominantly oriented parallel to the long axis of the cells. The filopodia are found to be in close connection with the surrounding network of collagen fibrils. Since the main strands of the fibrils show a mediolateral orientation, it may be assumed that the direction of cell migration depends on the arrangement of the collagen fibrils.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00343373
    Library Location Call Number Volume/Issue/Year Availability
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    Paper (German National Licenses)
    Fulltext
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