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A grayscale electron micrograph shows hundreds of sperm cells stuck together
Antibodies Stop Sperm in Their Tracks
Engineered antibodies trap and immobilize human sperm in the reproductive tract of female sheep, paving the way for possible use as a nonhormonal contraceptive in people.
Antibodies Stop Sperm in Their Tracks
Antibodies Stop Sperm in Their Tracks

Engineered antibodies trap and immobilize human sperm in the reproductive tract of female sheep, paving the way for possible use as a nonhormonal contraceptive in people.

Engineered antibodies trap and immobilize human sperm in the reproductive tract of female sheep, paving the way for possible use as a nonhormonal contraceptive in people.

sheep
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Amy Schleunes | Mar 24, 2020 | 2 min read
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The cells on one side of each wool fiber are longer than the cells on the other, researchers find. 
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A new analysis of Dolly’s skeleton suggests the cloned sheep’s arthritis did not lead to her death. 
Study: Cloned Sheep Age Normally
Tanya Lewis | Jul 26, 2016 | 3 min read
The animals, some of which were cloned from the same tissue as Dolly, appeared as healthy as non-cloned sheep, a study suggests.
Genome Digest
Tracy Vence | Jun 11, 2014 | 4 min read
What researchers are learning as they sequence, map, and decode species’ genomes
Cloning Biologist Dies
Edyta Zielinska | Oct 11, 2012 | 1 min read
Keith Campbell, a biologist who was part of the effort to clone Dolly the sheep, has passed away at the age of 58.
Texting Wolf
Hayley Dunning | Aug 7, 2012 | 1 min read
Swiss scientists create a collar for sheep that detects when they're stressed by wolves, and sends a text message to their shepherd.
Building a Better Sheep
Bob Grant | Apr 25, 2012 | 1 min read
Chinese scientists claim to have cloned a lamb carrying a roundworm gene that aids in the production of polyunsaturated fatty acids.
New Herd Virus Haunts Europe
Hannah Waters | Jan 17, 2012 | 1 min read
Researchers are working speedily to find a cure for a new virus that causes birth defects and stillbirth in cows, sheep, and goats.
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