#laboratory-mice

#laboratory-mice

The significant number of ancestors held in UK museums is extremely distressing and symbolic of the colonial origins of these collections. We hope that the responses gathered by The Guardian will be shared with the relevant communities to support them in bringing their ancestors home.

Cortical Labs in Melbourne taught a dish of lab-grown neurons to play Pong in 2022. Now it has built what it describes as the world's first code-deployable biological computer, running on living human tissue rather than silicon chips, which is happily playing the 1993 shooter Doom. At first it didn't know how to move, aim or shoot. Then it would shoot two enemies and stop. So it's definitely learning.

Young, two-month-old lab mice housed with older, 18-month-old mice showed really impaired cognition. Researchers exposed young mice raised in a sterile, microbe-free environment to gut bacteria from old mice, causing the younger animals to perform worse on cognitive tests, as if they had prematurely aged, just like the cohoused mice.

The pig organ filtered the man's blood for a few days while he waited for a human liver transplant. The man has since received a human liver and is recovering well, says Lin Wang, one of the surgeons who led the procedure in January at Xijing Hospital of the Air Force Medical University in Xi'an, China.

Fecal transplants from old female mice appear to boost fertility and ovarian health in younger ones. The findings, detailed in a study published Tuesday in the journal Nature Aging, indicate a direct link between gut health and reproductive health in the animals. They could also hold implications for future research into how the microbiome influences ovarian function and fertility in humans.

Last November, the UK government announced a bold plan to phase out animal testing in some areas of research. Animal tests for skin irritation are scheduled for elimination this year, and some studies on dogs should be slashed by 2030. The long-term vision is 'a world where the use of animals in science is eliminated in all but exceptional circumstances'.

Mini 3D 'organoids' are slowly phasing out animal testing in some areas of research. These laboratory-grown tissue structures can model human biology more accurately than traditional animal models, reducing the need for animal experimentation while providing more relevant data for drug development and disease research.

Rats were leaving Manhattan, hurrying across the bridges in single-file lines. Some went to Westchester, some to Brooklyn. It was the pandemic, and the rats, which had been living off the nourishing trash of New York's densest borough for generations, were as panicked about the closure of restaurants as we were. People were eating three meals a day at home, and the rats were hungry.

I expect Punch will be under careful observation by the keepers, and it sounds like they are trying various approaches to find a way to keep Punch in the group, which is best practice. If it looks like he is at risk of physical harm he would be removed from the group. As macaques are highly social intelligent primates this would be the last resort, only if he were deemed to be at risk of physical harm.

Countless millions of nonhuman animals (animals) of all sorts are used in a diverse array of laboratory research. Their treatment varies from being unspeakably inhumanely abused to being treated with kindness, depending on the questions at hand and the values and attitudes of the researchers themselves. The lives of these animals truly are hidden, and most people are incredulous when they learn that laboratory rats and mice still are not considered "animals" under the current federal Animal Welfare Act.

Martschenko's argument is largely that genetic research and data have almost always been used thus far as a justification to further entrench extant social inequalities. But we know the solutions to many of the injustices in our world-trying to lift people out of poverty, for example-and we certainly don't need more genetic research to implement them. Trejo's point is largely that more information is generally better than less.

Hosted at the Royal Institution, the lion, which died of old age and was then donated to science, will be dissected to demonstrate how animal biology works. Medical and veterinary students will be used to seeing such demonstrations, but doing the same for the voyuristic public might not seem very scientific, but it certainly does tick the classic idea of public demonstrations of science to educate the curious.

The 13-year-old Swiss Brown cow lives in the village of Notsch at the foot of the Carinthia mountains in southern Austria. She's kept as a pet by a local farmer, and can roam her meadow to her heart's delight. Like many other pets, she likes to have her back scratched. If no friendly humans are around to do the job, that's not a problem Veronika uses a brush or stick to do it herself.