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These four controls are only available as a pre-mixed cocktail with the defined concentrations and relative ratios. This combination of concentrations has been tested to provide qualitative information on both sensitivity and dynamic range of the labeling assay. Providing these controls in a pre-mixed format increases ease-of-use and reduces the number of manual dilution steps.
Information on ordering individual poly-A control clones and preparing poly-A stocks is available in Section 2, Chapter 2, and Section 3, Chapter 2, of the GeneChip® Expression Analysis Technical Manual. |