New Evidence For Corn's Ancestry Could Lead To Insect And Drought Resistant Crops
... role, Eubanks said. In the 1960s, Mangelsdorf and colleagues found the mostancient known preserved corn samples, believed to be more than 5,000 yearsold, within dry caves in Mexico's Valley of Tehuacán. The earliestsamples of teosinte have been dated to 1800 B.C. And the earliest evidencefor Tripsacum ...Enhancin Protein Attacks Insect Immune System
...an kill the host, Granados explained. Granados and colleagues reported their findings, "An intestinal mucin is the target substrate for a baculovirus enhancin," in Proceedings of the National Academy of Sciences (24 June 1997), authored by Granados and Ping Wang, Cornell graduate student in entomology. Another...Scientists Bridge Gap In Cell Communication
...alled MAD, UW-Madison geneticist Allen Laughon and colleagues determined that the protein is responsible for switching genes on or off by binding directly to DNA, in effect telling the cell to start or stop a specified task. It closes the loop, said Laughon, whose work was accomplished in fruit flies t...Fighting Wheat Scab In New York State
...itoxin. Cornell researchers are collaborating with colleagues at the Brazilian Wheat Research Center (EMBRAPA Trigo) in Passo Fundo, Brazil, to examine the potential for using naturally occurring microorganisms to fight fungal infections of wheat and corn plants in both the United States and Brazil. Wilmar da L...CSIRO Discovery Fights Cell Ageing
...geing human skin cells. Dr Robin Holliday and his colleagues have shown that Beta Alistine' (b alany l histidi ne) a substance naturally present in human andanimal tissues, has remarkable properties when it comes to fighting theageing process. His discovery, the result of many years' laboratory research, has...Resistance To Leptin Contributes To Obesity
...en." In previous studies, Friedman and his colleagues discovered leptinand documented weight loss in genetically obese and normal mice given dailyinjections of the protein for two weeks. These early studies required highdose injections of leptin. In the current study, much lower doses wereeffective in...Second Gene Responsible For Tuberous Sclerosis Complex Identified
... of Science* by David Kwiatkowski, M.D.,Ph.D., and colleagues at Brigham and Women's Hospital in Boston, was funded bythe National Institute of Neurological Disorders and Stroke (NINDS) and theNational Human Genome Research Institute (NHGRI), both components of theNational Institutes of Health. Investigators lo...Huntington's Disease Findings Pave Way For Potential Cure
...nck Institute for MolecularGenetics in Berlin, and colleagues have described the changes with unprecedentedclarity. The cellular and biochemical mechanisms they have discovered could be astarting point for the development of new drugs that could interrupt theprogress of Huntington's disease or prevent it in peo...Where Fossils Fear To Tread: Scientists Follow Genes To An Ancient Ancestor
... of independent evolution. But now Carroll and his colleagues argue that the problem of developing limbs, be they claws or wings, was solved just once a very long time ago, and that the genetic mechanism is still at work. "Everybody thought the wheel was invented again and again and again," Carroll sai......rent roles." In the study, Belisle and his colleagues confirmed that antigen 85 alsofunctions as an enzyme in forming and maintaining the TB bacteria's waxy andtough cell wall, which is composed of intricately linked mycolic acids. Thistight web makes the cell wall virtually impermeable to many drugs, m...Newly Discovered Human Protein Provides Important Target For Cancer Therapy
...Matthew Meyerson and ChristopherCounter, and their colleagues from the Whitehead Institute, the MassachusettsInstitute of Technology, Massachusetts General Hospital, Merck ResearchLaboratories, and McMaster University in Ontario, Canada, describe the newtelomerase subunit gene, hEST2 (human Ever Shorter Telom...Menstrual Phase Linked To Ineffective Mammograms
...ycle (days 15- 28). Baines and her U of T colleagues also looked at whether the women had taken hormones in the form of oral contraceptives or replacement therapy. Theanalysis showed a total of 1,898 women in study had never used hormones, 6,573 women werepast users and 416 were current users. ...Roadsides Benefit From Waste, UF Researchers Say
... of Food and Agricultural Sciences. Miller and his colleagues were charged by the Florida Department of Transportation with finding a way to improve roadside soil. The improved soil would help grass grow, and grass helps to stabilize roadways. The researchers turned to cities and counties, which produce mountai...Wild Plant Genes Increase Food Production
...ild rice and tomatoes, McCouch, Tanksley and their colleagues have systematically used molecular markers to map genes of rice and tomato plant varieties and looked for specific loci or genes -- known as the Quantitative Trait Locus, or QTL -- that would tend to boost production. Before the availability of molec...One Chimp Can Perceive States Of Awareness In Others
...ase, of a threat or a reward. Boysen and her colleagues tested three pairs of chimpanzees at the OhioState colony. Two adult males, Kermit and Darrell, who had been togetherfor 18 years, were tested, along with a pair of females, Sarah and Abagail,and a male and female -- Bobby and Sheba. For the te...Discovery Of Genetic Pathways May Provide New Ways To Combat Candida Infections
... journal Cell by first author Hsiu-Jung Lo and her colleagues from Dr. Fink's lab, Children's Hospital in Boston...s form. However, four years ago, Dr. Fink and his colleagues discovered that yeast cells could filament, opening new doors for research into fungal infections. ...UT-Houston Awarded $2.5 Million For Scleroderma Research
...s bothwelcome and appropriate. Dr. Arnett and his colleagues are at the cutting edgeof research on the complex and heartbreaking problem of scleroderma. I amdelighted that their work has been recognized in this way." Arnett attributes the success of UT-Houston's research proposal in largepart ...Mutant Gene Not Sole Explanation For Hiv Non-Progression
...r Anthony S. Fauci, M.D.; and their colleagues report their findings in the Sept. 15, 1997 issue of The Journal of Clinical Investigation . The study involved 33 patients from LIR's cohort of long-term nonprogressors, the NIAID-supporte...New Description Of Protein May Be Basis For Regulating Cholesterol
...f these compounds have similar origins." Cane and colleagues are interested in how the protein recognizes, processesand transforms the natural substrate into other products. The scientists usedcomputer models to describe how the substrate might be folded and shaped intoan active site in the protein, and identi......logy and physiology at the School of Medicine, and colleagues found that micegenetically engineered to lack an enzyme called macrophage elastase showed nosigns of emphysema even after inhaling the smoke of two unfiltered cigarettes aday, six days a week for six months. Such heavy smoking invariably causesemphys...