Chromatographic separation of coelomic fluid from Holothuria polii (echinodermata) and partial characterization of the fractions reacting with erythrocytes.

Coelomic fluid preparations from Holothuria polii were passed through a Bio-gel A5m column. The 3 separated protein peaks possess hemagglutinating or hemolytic activity against rabbit erythrocytes. Electrophoretic and immunochemical methods showed that 2 identical protein subunits characterized hemagglutinins of different size. Hemolysin differs from hemagglutinin in molecular weight and organization of subunits.