抄録
1) Pure A group carbohydrate from pig stomach mucus possesses glucosamine and galactose as the sugar component molecules but neither mannose nor fucose nor chondrosamine.
2) The above preparation of the sero-reactive polysaccharide involved leucine or isoleucine, valine or methionine, proline and arginine but no amino acids else.
3) A-and B-group carbohydrates from human gastric juice have no chondrosamine in their molecule, but the alcohol-insoluble matter of O gastric juice gave a chromatogram showing a spot corresponding in position to chondrosamine.