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Biology

  • 29 Apr 1997

    What makes a fat cell fat? Overeating, of course, is one reason these cells pack away fat molecules.

  • 28 Apr 1997

    Wine aficionados sampling a Cabernet Sauvignon may be able to sniff out the vineyard that made it and the year it was bottled, but they can't pierce the hazy origins of one of the world's most coveted wine grapes.

  • 28 Apr 1997

    Most patients with Alzheimer's disease seem to have inherited high levels of a mutant enzyme. The finding, reported in tomorrow's issue of the Proceedings of the National Academy of Sciences, could lead to a diagnostic test for the disease.

  • 24 Apr 1997

    Scientists have found that mammalian cells are densely "hard-wired" with force-carrying connections that reach all the way from the membrane through the cytoskeleton to the genome.

  • 24 Apr 1997

    Scientists have developed a genetically engineered vaccine that prevents urinary tract infections (UTIs) in mice.

  • 23 Apr 1997

    April showers bring May flowers. With a little genetic engineering, they could soon last until June. By transplanting a mutant gene into a petunia, researchers have created a flower that keeps its petals four times as long as nature intended.

  • 23 Apr 1997

    Women who have mutations in either of two genes, BRCA1 and BRCA2, have a dramatically increased risk of breast cancer. But researchers have had a hard time figuring out what role these two genes normally play--and why disrupting them has such a devastating effect.

  • 22 Apr 1997

    WASHINGTON, D.C.--NASA announced today that it will abandon Bion, a controversial life sciences project undertaken with Russia and France to test the effects of weightlessness on monkeys in space.

  • 22 Apr 1997

    For some scientists, a new bank may prove more popular than their local credit union.

  • 18 Apr 1997

    Scientists have identified the gene responsible for a rare form of endocrine tumor.

  • 16 Apr 1997

    Some smokers may be more susceptible to DNA damage from tobacco smoke and thus more likely to develop lung cancer.

  • 16 Apr 1997

    Citing examples of data-hoarding by colleagues, some scientists have griped that commercialism and competition are destroying the once-congenial atmosphere of U.S. academic labs.

  • 14 Apr 1997

    Fish living in waters near the North and South Poles separately evolved nearly identical antifreeze proteins to keep their blood and organs from freezing.

  • 11 Apr 1997

    In one of the greatest moments in modern medical science, American microbiologist Jonas Salk on 12 April 1955 pronounced his newly invented polio vaccine safe and effective in almost 90% of cases.

  • 8 Apr 1997

    Scientists have failed to find any trace of DNA in insects trapped in amber some 30 million years ago.

  • 7 Apr 1997

    Peer pressure from high school potheads isn't the only reason people start smoking marijuana: A new study suggests that some people inherit an ability to enjoy a marijuana high.

  • 4 Apr 1997

    Scientists have devised a computer model that may help solve a long-standing mystery: how physiological factors such as metabolic rate and life-span are related to body size.

  • 2 Apr 1997

    Today is the 70th birthday of Elizabeth Hay, an embryologist at Harvard Medical School who, through pioneering studies on regeneration of amphibian limbs, has shed light on the cellular mechanisms that transform normal cells into tumors.

  • 1 Apr 1997

    The mammals' main claim to fame--besides hair and nipples--is its bulging forebrain, or cerebral cortex, which controls aspects of thought and emotion.

  • 31 Mar 1997

    Scientists have devised a clever form of bug-to-bug combat to fight Chagas' disease, a potentially fatal muscle infection transmitted by the aphidlike kissing bug. The new weapon is a bacterium, normally found in the bug's gut, that is engineered to produce a lethal protein.

  • 31 Mar 1997

    When a Russian passenger jet crashed in Norway last fall, forensic scientists had the gruesome task of identifying victims from sometimes minuscule body parts.

  • 27 Mar 1997

    Have you ever wondered how your palm became different from the back of your hand? Scientists now think they have a clue to the answer: They have found the genes in chickens that tell cells whether they lie on the front or on the back of a developing limb.

  • 27 Mar 1997

    Scientists have discovered a gene, the inactivation of which may help take the brakes off the development of several major cancers, including those of the brain and prostate.

  • 26 Mar 1997

    Today is the 86th birthday of Sir Bernard Katz, a German-born English physiologist who elucidated how nerve cells transmit signals.

  • 26 Mar 1997

    Scientists have the first solid evidence that atrial fibrillation, an irregular heartbeat that affects as many as 2 million Americans and is a major cause of strokes, is inherited in some families.

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