Cellular Development and Myelin Production in Primary Cultures of Embryonic Mouse Brain

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Abstract
The development of cell cultures from embryonic mouse cerebral hemispheres has been followed in detail for periods up to 40 days in culture using a variety of approaches. Functionally well differentiated neurones (shown by receptor binding studies, immunocytochemistry and morphological examination) were found to be abundant early in culture and to form cell contacts with oligodendrocytes characterized both immunocytochemically and morphologically. Myelin-like membranes with the periodicity of classical myelin elaborated by oligodendrocytes were detected only after 30 days in culture when neurones were no longer present. These results are discussed with regard to possible mechanisms of initiation of myelin synthesis.

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