He proposed the A and B designations for the agglutinins. This should be contrasted with cold agglutinins, which cause agglutination of red blood cells. Her early research considered cold agglutinins, sensitive, misdirected antibodies that build up following mycoplasma pneumoniae. Autoantibodies and cold agglutinins may be present and 10% of CMML is DCT positive. In patients with infectious mononucleosis, more than 60% of whom develop cold agglutinins disease. Soybean agglutinins (SBA) also known as soy bean lectins (SBL) are lectins found in soybeans. Agglutinins can also be any substance other than antibodies, such as sugar-binding protein lectins.