Which of the following statements regarding a viral plaque assay is correct?单项选择题

A

To ensure accuracy, wells with between 10-100 plaques should be counted

B

In a plaque assay the amount of virus per well remains constant, but the amount of media changes in each well

C

Crystal violet only stains the virally infected cells allowing you to easily count the number of plaques

D

You can perform a plaque assay to measure the number of plaque-forming units in any given virus sample

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Which of the following statements regarding a viral plaque assay is incorrect?

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