The axial organ of the sea-star Asterias rubens is a primitive immune organ. The B-like cells, when stimulated by various antigens, produce antibody substances correlated with Ig Kappa gene. A candidate Ig kappa gene (IgK chain V-IV region S107B precursor) more convincing in term of genome was shown.
At least two genes found in the genome of Asterias rubens after immunizations to the antigen Horse-Radish Peroxydase (HRP), could play the role of oncologic markers: The first one (Igkappa chain V-V region T 1 S 107 B precursor) reveals myeloma; The second (B cell CLL/Lymphoma 9-like) as the first one has a kinship to the IgKappa gene subfamily.
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