Changes in Concanavalin A-mediated Cell Agglutinability During Differentiation of Micromere- and Mesomere-derived Cells of the Sea Urchin Embryo

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Cell surface changes during the differentiation of micromeres and mesomeres isolated at the 16-cell stage of sea urchin embryos of Strongylocentrotus intermedius were examined as to concanavalin A (Con A)-mediated cell agglutinability. Among the observed stages from early blastula-1 to the prism larva, the agglutinability was highest at the early blastula-1 stage and decreased at a later stage in both micromere- and mesomere-derived cells. In the mesomere-derived cells, the agglutinability was maintained at a rather constant rate after the early blastula-2 stage. In the micromere-derived cells, the agglutinability decreased until the midmesenchyme blastula stage, and at the beginning stage of gastrulation, the variance of the agglutinability became larger than that of the previous stages.
社団法人日本動物学会の論文
1980-09-25