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Page 728 out of 728

β3 human papillomavirus species share several biological properties with high risk mucosal types

Minoni, L;
Product: Cholera Toxin (AZIDE-FREE) from Vibrio cholerae

Biological Material:

...Cholera Toxin (FAD)

8,3 ng/ml (working concentration)

List Biological laboratories, INC (Company)

 

Author did not specify which Cholera toxin was utilized.  List Labs Product #101B/C - Cholera Toxin from Vibrio Cholerae has been discontinued; however, List Labs still provides Product #100B - Cholera Toxin (AZIDE-FREE) from Vibrio cholerae.  

To follow, are our recommendations for transitioning from Product #101B/C to Product #100B:

Product #101B, Cholera Toxin from Vibrio cholerae (1 mg), has been discontinued.  Product #100B, Cholera Toxin (AZIDE-FREE) from Vibrio cholerae, may be substituted for Product #101B, if the user accounts for the formulation differences.  Both products contain the same quantity of toxin per vial (1.0 mg).  For Product #100B, reconstitution with 1.0 mL of water results in a 1 mg/mL toxin solution in a buffer with the following component concentrations:  0.05 M Tris, 0.2 M NaCl, 0.001 M Na2EDTA at pH 7.5.  For Product #101B, reconstitution with half that amount of water (0.5 mL) resulted in a 2 mg/mL toxin solution with the same concentrations of the buffer components, and in addition, Product #101B contained 0.003 M NaN3.  The user may add the sodium azide preservative to product #100B, if desired.

Product #101C, Cholera Toxin from Vibrio cholerae (2 mg), has been discontinued.  Product #100B, Cholera Toxin (AZIDE-FREE) from Vibrio cholerae, may be substituted for #101C, if the researcher accounts for the formulation differences.  While Product #101C contained 2.0 mg per vial, Product #100 contains 1.0 mg per vial.  When Product #100B is reconstituted with 1.0 mL of water, the resulting 1 mg/mL toxin solution will have buffer components with the following concentrations:  0.05 M Tris, 0.2 M NaCl, 0.001 M Na2EDTA at pH 7.5.  For Product #101C, reconstitution with less than half that amount of water (0.4 mL) resulted in a 5 mg/mL toxin solution in the same buffer, and in addition, Product #101C contained 0.003 M NaN3.  The user may add the sodium azide preservative to product #100B, if desired. 

Large quantities of Product #101B or Product #101C may be obtained through Bulk Requests and Customer Orders