Rabbit purified IgG fraction of antiserum to the B subunit of Cholera toxin. The immunogen is purified Choleragenoid. Cross-reacts with E. coli heat liable toxin. Can be used to immunoprecipitate toxin in gel techniques. Purity is >95% IgG and is supplied at a concentration of 4-5mg/mL in 0.01M PBS, pH 7.2 with 0.1% sodium azide. Recommend short term storage at 2-8°C or frozen for long term.