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Biology

  • 9 Jul 1997

    Like a mark of death, engineered proteins called monoclonal antibodies are supposed to stick to cancer cells and flag down immune fighters to destroy a tumor. But such a strategy, for some unknown reason, has generally failed.

  • 9 Jul 1997

    Researchers have found that the brains of people who grow up bilingual process the two languages differently from those who learn a second tongue later in life.

  • 8 Jul 1997

    Women can suffer severe problems, such as osteoporosis, after their reproductive hormones dry up. Now comes new evidence that men, too, tend to fall apart as their blood levels of a sex hormone--in this case, testosterone--drop.

  • 7 Jul 1997

    Camillo Golgi, an Italian physician famed for his microscopic studies of the nervous system, was born on this day in 1843. When he was 30, Golgi invented a technique for staining cells that allowed him to view neurons in fine detail.

  • 7 Jul 1997

    Scientists have discovered a gene that, when mutated, makes mice grow obese without boosting their appetite. The finding, reported in tomorrow's Proceedings of the National Academy of Sciences, surprisingly suggests that white blood cells, key immune fighters, help regulate body fat.

  • 3 Jul 1997

    Some cases of a fatal neurodegenerative disorder linked last fall to "mad cow disease" may not be triggered by the agent that most scientists have suspected.

  • 2 Jul 1997

    The world's hardiest microbes--those that have become resistant to traditional antibiotics--are now under surveillance. Medical researchers have launched a new program, called Sentry, that links up 72 hospitals and clinics worldwide to keep tabs on these scourges.

  • 2 Jul 1997

    A perplexing thing about penguins is that they can stay underwater longer than we can, even though their blood is no more rich in oxygen than ours. Now scientists may have figured out how penguins do it: The birds cut blood flow to inactive organs and go into hypothermia.

  • 1 Jul 1997

    Patients recovering from anorexia nervosa appear to have abnormal levels of the weight-regulating hormone leptin. The findings, reported in two pilot trials, suggest that body chemistry--in addition to mental state--impedes anorexic patients from reaching a healthy weight.

  • 30 Jun 1997

    After taking a several-month hiatus from the Russian science scene, philanthropist George Soros is at it again: The billionaire financier has ponied up $3 million to create two new labs in Moscow to study tuberculosis and hospital-borne infections.

  • 27 Jun 1997

    On this day in 1970, U.S. virologist David Baltimore published a breakthrough paper in Nature describing reverse transcription. The process enables some viruses to insert their genetic material into the DNA of healthy human cells, which can lead to tumors and other diseases.

  • 27 Jun 1997

    The sea lamprey, unlike a person or any other higher vertebrate for that matter, can repair its spinal cord when it is severed. Now researchers have a hint of where this primitive fish gets its regenerative powers.

  • 27 Jun 1997

    Kiss the wrong person and you might get mononucleosis, which could mean days laid up in bed with swollen glands and fatigue. For monkeys, however, the Epstein-Barr virus (EBV) responsible for mono is often the kiss of death, which has been a big hurdle to studying the bug in primate models.

  • 27 Jun 1997

    A genetic mutation that can delay the onset of AIDS in people infected with HIV may hasten death after symptoms of the disease appear.

  • 26 Jun 1997

    Scientists have pinpointed the gene that, when defective, causes a hereditary form of Parkinson's disease in a large Italian family.

  • 26 Jun 1997

    An ill-behaved brain protein that escaped notice for over 90 years has unexpectedly emerged as a major possible cause of Alzheimer's disease.

  • 25 Jun 1997

    LONDON--The more Europeans know about biotechnology, the less they like it, according to a new multinational survey. And when they ponder potential applications, they worry more about moral issues than perceived risks.

  • 24 Jun 1997

    WASHINGTON--William Haseltine and J. Craig Venter, who graced the cover of Business Week as the "Gene Kings" in 1995, announced yesterday that they are going their separate ways.

  • 23 Jun 1997

    A genetic desert on chromosome 21 may harbor a sinister oasis: a series of genes that might include one or more that lead to mental retardation in Down syndrome.

  • 23 Jun 1997

    After a long, frustrating hunt, two groups of scientists have finally nabbed genetic defects responsible for obesity in some people.

  • 19 Jun 1997

    WASHINGTON, D.C.--As the sole witness for 3 hours of questioning on embryo research, Harold Varmus, director of the National Institutes of Health (NIH), endured a grilling on Capitol Hill today before the House subcommittee on oversight and investigations.

  • 17 Jun 1997

    Alzheimer's Researcher to Head Drug Company Program

  • 16 Jun 1997

    American geneticist Barbara McClintock, who challenged the prevailing theory that genes were stable components of chromosomes with her discovery of "jumping genes," was born on this day in 1902.

  • 13 Jun 1997

    Jules Bordet, a pioneer in immunology, was born on this day in 1870. The Belgian scientist is best known for figuring out how to detect immunity to bacteria or viruses. He discovered that a host organism needs two types of proteins to destroy an invading bacterium.

  • 11 Jun 1997

    Researchers have finally been able to make the charges stick against a long-suspected tumor suppressor gene. The gene, called NF1, was pinpointed in 1990 as the culprit in neurofibromatosis (NF), a disfiguring and potentially deadly disease that affects one in 3500 people.

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