June 1, 1999 |
Scientists in Hawaii have cloned a trio of identical mice using ordinary cells rather than DNA extracted from the female reproductive system. This time, the cloned critters were male. The clones grew using genetic material extracted from tail cells of adult male mice, but only one grew to adulthood, according to a study in the June issue of the journal Nature Genetics.
December 23, 1988 |
Stanford scientists have made a major advance in AIDS research by transmitting the disease to mice that have a human immune system. The infected mice, experts said, promise to be valuable tools for studying the development of AIDS as well as for testing new drugs and vaccines. The production of mice with human immune systems was announced only three months ago, after the Stanford scientists had implanted fetal human immune tissues into a special strain of immune-deficient mice.
July 22, 2002 |
* Adding an extra version of a single gene makes mice grow big brains--brains so large they have to fold up, much as human brains do, to fit inside the skull, researchers said. It is not yet clear whether the mice are smarter (they were all killed soon after birth), but the scientists said they were surprised that one gene had such a strong effect and said they would conduct further experiments.
CALIFORNIA | LOCAL
November 25, 1999
Molecular biologists have created a strain of mice that models one of the key features of Alzheimer's disease, the accumulation of "tangles" containing a protein called tau. The tangles, along with another deposit called plaque, are one of the key features of the disease, which affects as many as 4 million Americans. A team from the University of Pennsylvania reports in the November issue of Neuron that it added an extra copy of the tau gene to mice.
February 15, 2003 |
When it comes to love, mice are ahead of humans by a nose. Researchers have discovered that mice, when deciding whether to mate, use a "second nose," which figures out gender, status and even if romantic feelings are mutual. The more familiar nose may tell an animal where food is, but a separate organ, called the vomeronasal organ, opens up a different world of perception, said Lawrence Katz, an investigator for the Howard Hughes Medical Institute at Duke University.
CALIFORNIA | LOCAL
July 1, 2005 |
Seven deer mice found in Loma Linda, Yucaipa and Mentone were confirmed to carry the potentially fatal hantavirus, state officials said Thursday. The last reported case of hantavirus pulmonary syndrome, the disease in its human form, occurred in the area about two years ago in a Highland resident, who survived the infection. The disease was recognized only 12 years ago, but there have been 43 human cases -- with 25% fatalities -- in California and more than 380 cases nationwide.
September 15, 1988 |
Two research groups working independently reported Wednesday that they have for the first time created a functioning human immune system in mice by implanting human tissues in a strain of mice that have no immune system. This remarkable feat, the researchers said, should make it possible to study the effects of the AIDS virus on the human immune system without endangering people and thereby develop new clues about how to treat and possibly prevent this modern plague.
May 15, 2004 |
Sooty air pollution can cause genetic damage in mice that can be passed along to offspring, Canadian researchers reported in this week's issue of the journal Science. The team from Ontario's McMaster University found that the culprit was airborne particulate matter, better known as soot, and was concerned that it could produce the same damage in humans. The specific DNA changes observed in sperm aren't linked to disease, but they're similar to a type of damage that is.
September 2, 1999 |
By adding a single gene to fertilized eggs, Princeton University researchers have been able to create smarter mice, a feat that could lead to the development of more intelligent animals and that hints at the feasibility of producing so-called designer babies with enhanced intelligence. The accomplishment demonstrates for the first time that a complex trait like intelligence can be genetically manipulated in mammals.
June 28, 1985 |
The Interior Department has added a Midwestern bird and three types of mice living on Gulf Coast sand dunes to its list of endangered species, officials said Thursday. The Perdido Key beach mouse is considered the most critically endangered small mammal in the country, the department said. Only 26 of the mice are thought to exist, all of them at Florida Point in Alabama's Gulf State Park.