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List Labs has provided Product #103B [Cholera Toxin B Subunit (Choleragenoid) from Vibrio cholerae] and Product #104 [Cholera Toxin B Subunit (Choleragenoid) from Vibrio cholerae in Low Salt]. The former has been discontinued. The latter may be substituted for the former, if the researcher takes into account the difference in the buffer in which each product is provided and the amount of protein per vial. When Product #103B was reconstituted with 200 μl of water, it contained 1 mg of protein in 0.05 M Tris, 0.2 M NaCl, 0.001 M Na2EDTA, 0.003 M NaN3, pH 7.5. When Product #104 is reconstituted with 0.25 ml water, it contains 0.5 mg of Cholera Toxin B Subunit (choleragenoid) in 0.01 M Sodium Phosphate at pH 7.5.
For more information regarding List Labs Product #104; Cholera Toxin B Subunit (Choleragenoid) from Vibrio cholerae in Low Salt, to follow is a link to the product page:
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