Abstract
1. From human liver group active lipoids were separated. Of them A and B group substance inhibited isoagglutination of erythrocytes at a dilution from 1:1600_??_3200 specifically.
2. These group lipoids dissolved in water, benzene, chloroform, tetralin and glacial acetic acid, but not in ethanol, ether, petroleum ether and -acetone. They dissolved in methanol scarcely in the cold but to a certain extent when boiled.
3. The group lipoids contained galactose, hexosamine, P and N in equivalent proportions of roughly 1:1(most probably): 10:10. Their minimum molecular weight (The substances were presumed as nearly pure) of 6500 was computed out from galactose content. N. E., 600_??_700.
