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How did the rise of the factory system change the American family?
First Morning Urine
The first urination after waking up, often used in medical testing as it is more concentrated and can provide more accurate results.
Random Urine
A urine sample taken at any given time, without any prior preparation, used for general or specific medical testing.
Specimen
A sample or part taken from a living organism or the environment for the purpose of scientific examination.
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