Friday, 25 September 2015

Sketchy Fact #97: Unfortunate Frogs

Until the 1960’s, the most reliable pregnancy test available was to inject a woman’s urine into an African clawed frog. If the woman was pregnant, the frog would ovulate.


9 comments:

Viviane Gregory said...

I thought it was a rabbit?

http://uk-writing-reviews.com/essayservice-info/ said...

Never heard about it. Poor frogs. But how all this process works out?

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