15 Interesting Facts About Pregnancy Tests - Page 14

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Rats or mid wives?

Nih.gov says that in 1927, rats and mice were used to figure out whether or not a woman was pregnant. If a woman suspected she was pregnant, a doctor would inject some of her urine into an immature rat or mouse. If she was, the mouse or rat would go into heat, in spite of the fact that it was too young to do so.

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