Bruce effect

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Science and technology

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What Wikipedia says

The Bruce effect, or pregnancy block, is the tendency for female rodents to terminate their pregnancies following exposure to the scent of an unfamiliar male. The effect was first noted in 1959 by Hilda M. Bruce, and has primarily been studied in laboratory mice (Mus musculus).

Excerpt from the Wikipedia article “Bruce effect”, under the CC BY-SA 4.0 license. Read the article on Wikipedia

Image: Charles J. Sharp, CC BY-SA 4.0, via Wikimedia Commons.