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Mathematics 18 Online
OpenStudy (anonymous):

how many full length strands of hair are collected from the scalp to use as a sample?

OpenStudy (anonymous):

Most of the time,you only need one strand of hair to use as a sample. But other times you might need more.

OpenStudy (yoloshroom):

i thnk it's 50 ^_^

OpenStudy (anonymous):

thank you

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