Sentences with phrase «wild mice»

Strong swimming sperm's secret A gene variant can make sperm strong and speedy, a study of wild mice suggests.

And at least one lifespan - extending strategy, caloric restriction, is much less effective when used in wild mice or monkeys, he says.

It turns out that even wild mice really enjoy running on wheels.

«Gut bacteria from wild mice boost health in lab mice.»

To further validate AH10 - 7's effectiveness, the researchers tested the new compound in wild mice as well as partially «humanized» mice, whose genomes were modified to mimic the human iNKT cell response.

Professor Viney from Bristol's School of Biological Sciences said: «It's remarkable that despite the enormous number of studies of laboratory mice, ours is the first in - depth study of wild mice immune systems.

The video is a kind of a political Wild Mouse ride, with a touch of Jon Stewart and a touch of Ferris Bueller.

Now, a new study of wild mice shows that they, too, can develop signs of domestication — white fur patches and short snouts — with hardly any human influence.

The accident began in 2002 when scientists studying mouse behavior and disease transmission trapped a dozen wild mice in a barn in Illnau, Switzerland.

Researchers aware of this reality have now shown that transplanting gut bacteria from wild mice into «clean» lab mice has made those rodents less likely to die from the flu or develop cancer.

They used only wild mice donors that had not had any obvious infections, so the researchers could assess the impact of a natural microbiome as opposed to the impact of transferred rodent pathogens.

Because wild mice are constantly exposed to germs and other environmental insults, he adds, they carry microbiomes that have evolved to help their hosts cope with these problems, seemingly making the immune system less reactive to harmless microbes and other environmental insults, yet more reactive to other, potentially deadly ones.

Barbara Rehermann and Stephan Rosshart first collected 800 wild house mice (Mus musculus domesticus) in the Washington, D.C., metro area, and compared their DNA and gut bacteria both with a lab mouse strain and with wild mice from all over the world.

Gough Island might have been largely uninhabited by humans, but 50 years later, residents of nearby islands raised questions about the unusually vicious mice that now roam the island (50 per cent heavier than wild mice anywhere in the world) and devastate the bird population.

But when the mice were engaged in just one type of learning, humanized and wild mice did equally well on all the tests.

Geneticist Jiří Forejt of the Czech Academy of Sciences» Institute of Molecular Genetics in Prague wasn't looking for it when he caught wild mice and bred them with lab mice to study diversity of immune system genes.

One of the mouse lines that expired, dubbed 5262, had particularly wild mice that were «difficult to handle and very vocal when agitated,» Wanstrath says.

He says, however, because they are small and easy to keep in captivity — unlike wild mice, which are notoriously difficult to maintain in cages — wall lizards would make a good model species for experiments designed to determine the effects of toxins on mortality, reproduction and growth.

Professor Mark Viney and colleagues from the University of Bristol and the London School of Hygiene & Tropical Medicine studied the immune systems of 460 wild mice taken from 12 sites in the UK and compared them with mice bred in captivity.

Whereas 65 percent of new neurons in wild mice ended up in the olfactory bulb, little more than 9 percent of the mutants» neurons were able to complete the journey.

So, the researchers tried to give laboratory mice back what they have lost: a naturally co-evolved wild mouse gut microbiota.

It suggests that the early hunter - gatherer settlements transformed ecological interactions and food webs, allowing house mice that benefited from human settlements to out - compete wild mice and establish themselves as the dominant population.

«The competition between commensal house mice and other wild mice continued to fluctuate as humans became more mobile in arid periods and more sedentary at other times — indicating the sensitivity of local environments to degrees of human mobility and the complexity of human environmental relationships going back in the Pleistocene,» said Weissbrod, currently a research fellow at the Zinman Institute of Archaeology at the University of Haifa.

Led by Thomas Cucchi of National Center for Scientific Research in Paris, France, and Lior Weissbrod of the University of Haifa in Israel, the study set out to explain large swings in the ratio of house mice to wild mice populations found during excavations of different prehistoric periods at an ancient Natufian hunter - gatherer site in the Jordan Valley of Israel.

If this works it will give you a strong idea of where your hamster may be, although on the other hand it may also be other rodents such as wild mice who are stealing the food.

«What this shows is that wild mouse immune systems are working at «warp - speed», compared with their lab cousins.

Researchers then introduced (engrafted) the microbiota of wild mice to pregnant, germ - free C57BL / 6 mice.

Now, immunologists at the National Institute of Diabetes and Digestive and Kidney Diseases in Bethesda, Maryland, have contaminated lab mice in a different way: by giving them gut bacteria from wild mice.

The genetics of adaptation in wild mice.

The gut bacteria from the wild mice were fairly similar, but the microbiomes of the lab mice were significantly different, with fewer Bacteroidetes and Proteobacteria, for example.

But Wherry cautions that the dirty mice may simply be better models for studying wild mice, not human disease.

When humanized mice and wild mice were put in mazes that engaged both types of learning, the humanized mice mastered the route to the reward faster than their wild counterparts, report Schreiweis, Graybiel, and their colleagues online today in the Proceedings of the National Academy of Sciences.

Curiously, about 13,000 years ago, the advantage swung back to the wild mice, coinciding with archaeological evidence that the Natufians were building smaller structures and using them less often.

Some wild mice are diligent parents, building elaborate grassy nests to keep their young safe and warm.

Researchers compared two species of wild mice — one promiscuous, one monogamous — to learn how genetic factors produce physical characteristics that may give one species an evolutionary edge.

We all know that mice like to run on wheels in cages, but wild mice will do the same on a wheel placed outside.

The wild mice also tightly control their responses to new infections, probably to prevent immune - mediated disease.

Importantly, the researchers showed that wild mice have more highly - activated myeloid cells — bone marrow cells that initiate immune responses.

The wild mice had highly - activated immune systems, most likely because they are more exposed to infections.

Some 3000 years later, when the Natufians returned to a seasonally mobile lifestyle, the wild mice made a comeback.

The researchers confirmed that C57BL / 6 mice had distinct gut microbiomes from wild mice.

This is a visualization of the process of transferring gut microbiota from wild mice to laboratory mice.

The immunological benefits from the wild mice's gut bacteria may, in part, explain a persistent problem in disease research: Why disease experiments in lab mice, such as vaccine studies, turn out very differently in humans or other animals.

The researchers trapped more than 800 wild mice from eight locations across Maryland and the District of Columbia to find healthy, suitable candidates for a gut microbiota donation.

Laboratory mice that are given the gut bacteria of wild mice can survive a deadly flu virus infection and fight colorectal cancer dramatically better than laboratory mice with their own gut bacteria, researchers report October 19 in the journal Cell.

They then tested and compared the gut microbiomes (collective genomes of the gut microbiota) of the wild mice (Mus musculus domesticus) and a common strain of laboratory mice, called C57BL / 6, from multiple sources.