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Gel filtration and SDS/PAGE analysis of lamprey GlcNAc-binding lectin. Lamprey serum was subjected to Mono Q column chromatography, followed by gel filtration on Superose 6 in the presence of Ca2+, as described in Materials and Methods. (A) SDS/PAGE profile under reducing conditions. Arrows indicate fractions in which standard substances were eluted. (B) Protease activity of each fraction.
