In a doubling dilution series, which of the following is true?
A. Each dilution is half the concentration of the previous dilution.
B. Each dilution is two times as dilute as the previous dilution.
C. The dilution in each tube is found by multiplying the previous dilution by 2.
D. All are correct (a-c).
E. Only (a) and (b) are correct.
Answer: D
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