Chromogens for enzyme Horseradish peroxidase (HRP) include which of the following?

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Multiple Choice

Chromogens for enzyme Horseradish peroxidase (HRP) include which of the following?

Explanation:
When using Horseradish peroxidase in immunohistochemistry, the enzyme catalyzes the development of colored precipitates from chromogenic substrates. Two common HRP chromogens are DAB, which produces a brown precipitate, and AEC, which yields a red-orange precipitate. Therefore, both DAB and AEC are chromogenic options for HRP, giving brown and red colors respectively. The other choices are incomplete or inaccurate: they either list only one chromogen color, or attribute Fast Red to HRP (Fast Red is typically used with alkaline phosphatase rather than HRP).

When using Horseradish peroxidase in immunohistochemistry, the enzyme catalyzes the development of colored precipitates from chromogenic substrates. Two common HRP chromogens are DAB, which produces a brown precipitate, and AEC, which yields a red-orange precipitate. Therefore, both DAB and AEC are chromogenic options for HRP, giving brown and red colors respectively. The other choices are incomplete or inaccurate: they either list only one chromogen color, or attribute Fast Red to HRP (Fast Red is typically used with alkaline phosphatase rather than HRP).

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