Abstract
1) A antigenic polysaccharide was isolated from the trypaflavine lysate of B. anthracis through ethanol precipitation and zone electrophoresis.
2) The substance was shown to be a single component in serological and physically by agar diffusion test and ultracentrifugation.
3) An antigenic polysaccharide from a heat dried cell extract and an antigenic polysaccharide from a lysate showed the identical precipitin titer, identical composition in respect to component sugar and amino acids, and similar infra-red absorption spectrum.
4) The substance and CA (antigenic substance from the heat dried cell extract) reacted with anti- B. cereus and anti-B. subtilis serum in equal degree.
