Description_x000D_ Packaging_x000D_ 1, 5 mg in glass bottle_x000D_ Biochem/physiol Actions_x000D_ DSL is not blood group specific but has an affinity for oligomers of N-acetyl-glucosamine and N-acetyllactosamine. The lectin is a glycoprotein containing approx. 35% carbohydrate._x000D_ Quality_x000D_ Highly purified._x000D_ Preparation Note_x000D_ Purified by affinity chromatography_x000D_ Analysis Note_x000D_ Agglutination activity is expressed in μg/ml and is determined from serial dilutions of a 1 mg/ml solution in phosphate buffered saline, pH 6.8. This activity is the lowest concentration to agglutinate a 2% suspension of human erythrocytes after 1 hr incubation at 25 °C.