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Purified polysaccharides were isolated from coagulase-positive staphylococci of pigeon, dog and swine origin. In agreement with previous serologic findings in whole bacteria, three types of cell wall polysaccharides were demonstrated according to their serologic and chemical characteristics. Each polysaccharide produced one specific precipitation line in agar gel. Poly H (pigeon) seemed to be a glycerol teichoic acid containing β-glucosamine as the antigenic determinant. Poly P (dog) and poly V (swine) apparently had rather complex and unusual structures. Both were polyglycerophosphates and two, respectively four, sugars were detected.