Abstract

A d-galactose specific lectin was purified by affinity chromatography from eggs of the sea urchin, Anthocidaris crassispina. It is a dimer, composed of two monomers of 11500 MW. The highest affinity is directed to thiodigalactoside. Indirect immunofluorescent staining revealed the lectin as fluorescent spots, randomly distributed in the cytoplasm. After fertilization, these fluorescent foci become localized in the peripheral layer of the egg.

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