We studied the influence of doubling the mass of explanted fragments of the dorsal and ventral loach blastoderm at the early gastrula stage on their capacity for differentiation of axial structures. The dorsoventral differences are as follows: the differentiation of somites correlates, according to the results of factor analysis, with the shape complication only in double dorsal explants, while the notochord is more differentiated in the ventral fragments, if it is present, than in the dorsal ones. Doubling of the mass of dorsal fragments of the blastoderm enhances their morphogenetic potencies and shifts differentiation towards the formation of trunk axial structures. The increased mass of ventral fragments does not affect their differentiation and morphogenesis, but disturbs the correlation of these processes.
Russian Journal of Developmental Biology – Springer Journals
Published: Oct 18, 2004
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