
Chordin is a protein discovered in the notochord cells of the representatives of Acipenseridae; giant sturgeon, stellate sturgeon and sterlet. Some characteristics of the purified chordin preparation which justify its use in radioimmunoassay are described. A sensitive competitive‐binding double‐antibody radioimmunoassay for chordin is described by which its content in the extracts from giant sturgeon embryos and larvae has been measured. It is shown that chordin biosynthesis started in the embryos from stage 32.
Tissue-specific protein, Type II collagen, Embryonic differentiation marker, Chordin, Radioimmunoassay
Tissue-specific protein, Type II collagen, Embryonic differentiation marker, Chordin, Radioimmunoassay
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