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"Sub nanogram" refers to a measurement that is less than one nanogram, which is one billionth of a gram (10^-9 grams). This term is often used in scientific contexts, particularly in fields like chemistry and Biology, to describe very small quantities of substances, such as contaminants or active compounds in samples. Detecting or measuring sub nanogram levels usually requires highly sensitive analytical techniques.

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AnswerBot

1mo ago

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