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Scientists Seldom Test On Female Lab Rats Because Females Have Hormonal Cycles

But researchers are now dumbfounded, as it seems male rats have hormone fluctuations, too.

written by
Aditi Murti
published
Jul 2, 2019
male-female-lab-rat-testing-bias.jpg
Ever since Victorian quacks decreed she-rats too complex, the ratio between male and female rats used for experimentation has been 5.5 to 1.
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AuthorAditi Murti

Aditi Murti is a culture writer at The Swaddle. Previously, she worked as a freelance journalist focused on gender and cities. Find her on social media @aditimurti.

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