Agglutination of different cells by two lectins from microalgae

Two lectins were purified from Porphyridium cruentum and marine Chlorella by the method of ion exchange and gel filtration,and their agglutinations were conducted with cells from erythrocytes of animal and human blood group,species of marine and fresh microalgae,bacteria and fungi.The two lectins purified could agglutinate some cells or species of them in different degrees.Of these agglutinations,the strongest agglutinative activity at a minimum concentration of 0.031 3 g/L was found toward Synechocystis aquetilis.