A stretch of viral DNA in the mouse genome gives cells in early-stage embryos the potential to become almost any cell type in ...

Colossal Biosciences and its woolly mouse are bringing holiday magic to the lab this year, blending festive storytelling with breakthrough science in an unexpected way. In a whimsical Christmas video, ...

Scientists injected human stem cells into mouse embryos and let them develop. One of the resulting embryos had 4% human cells after 17 days of additional maturity. Human cells were found in tissue ...

A small brown mouse has just done something no mammal has ever done before: give birth on Earth after spending part of its ...

Scientists coaxed mouse stem cells to grow into synthetic embryos that began developing hearts and brains, just like the real thing. "This has been the dream of our community for years and [a] major ...

Scientists have created “synthetic” mouse embryos from stem cells without a dad’s sperm or a mom’s egg or womb. The lab-created embryos mirror a natural mouse embryo up to 8 ½ days after fertilization ...

A three-year project to create a detailed 3D 'atlas' of the brain of a lab mouse is now finished. The resulting model will help scientists better understand the effects of treatments and testing ...

A yellow-rumped mouse is spotted at the top of a 22,000-foot volcano in the Andes. "This astonishing elevation shows to what extremes life is capable of." Journalist Bonnie Burton writes about movies, ...

Mouse sperm could win awards for resilience. Sperm freeze-dried and sent into space for months of exposure to high levels of solar radiation later produced healthy baby mice, researchers report May 22 ...

The quest to resurrect the woolly mammoth on Earth has taken another, well, small step with the creation of the Colossal Woolly Mouse. The lab-engineered rodents have seven genes that have been ...

In the wild, a mouse or rat leads a precarious life. In the city, they dodge traps, poisons, and broom-wielding humans. In the countryside, they face owls, shotguns, and more poison. As Australia’s ...