Marine biopolymers with cell specificity--III--Agglutinins in the red alga Cystoclonium purpureum: isolation and characterization.

The red alga, Cystoclonium purpurcum, contains agglutinins which selectively agglutinate mouse leukemia cells L5178Y but not L1210. It also agglutinated erythrocytes, lymphocytes, and a marine bacterium. The major component was a glycoprotein having a molecular weight of 12,500 daltons. It contained 5.6% carbohydrates and consisted of two subunits.