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Tag: "lived" at biology news

Inside rocks, implications for finding life on Mars

...y insight about the biochemistry of organisms that lived nearly a billion years ago, and this (confocal microscopy and Raman spectroscopy) gives it to you. You see the cells in the confocal microscopy, and the Raman spectroscopy gives you the chemistry. "We can look underneath the fossil, see it from the ...

How ancient whales lost their legs, got sleek and conquered the oceans

...nge. "We can see from fossils that whales clearly lived on land - they actually share a common ancestor with hippos, camels and deer," said team member Martin Cohn, Ph.D., a developmental biologist and associate professor with the UF departments of zoology and anatomy and cell biology and a member of the ...

Study links high levels of nitric oxide to infertility and sperm DNA damage

...n the fertile and infertile men as to whether they lived in the country or in built-up, traffic-congested areas, although Dr Amiri did not rule out the role played by NO in air pollution. "Our next step is to identify the role of some environmental factors such as air pollution, jobs, disease and smoking ...

New findings offer more complete view of breast cancer gene mutations in US population

...ite and African American women, ages 35 to 64, who lived in the Atlanta, Detroit, Los Angeles, Philadelphia and Seattle metropolitan areas. "The advantages of this study include its large sample size, inclusion of under-studied groups of women and the fact that the results are population based," said one...

Computational analysis shows that plant hormones often go it alone

Unlike the Three Musketeers who lived by the motto "All for one, one for all," plant hormones prefer to do their own thing. For years, debate swirled around whether pathways activated by growth-regulating plant hormones converge on a central growth regulatory module. Now, the cooperation...

New research examines genetics of successful aging

...n or women, but not both. "Historically women have lived longer than men on average, the prevalence of numerous serious diseases differs in men and women, and there are important differences in age-related physiological changes that occur between the sexes over the life span," said Dr. Zubenko. "It would n...

Tyrannosaur survivorship -- tough times for teens

.... The pattern also shows that if the Albertosaurus lived until the age of two, he enjoyed a low death rate ...vidual giants--just two per cent of the population lived long enough to attain maximal size and age for the species. ...

Higher risk for cervical cancer seen among women infected with multiple HPV types

...en, ages 18 to 40, most of whom were Caucasian and lived in Brazil. The team of scientists who conducted the study is based at McGill University in Canada and the Ludwig Institute for Cancer Research in Brazil. The results suggest that the current method that doctors use for HPV screenings ?the Papanico...

A sweet solution for Alzheimer's disease?

...s disappeared, inflammation declined, and the mice lived longer. The scientists found that scyllo-inositol conferred these benefits not only if the mice were treated when they were very young and disease-free, but also if they were treated after the onset of disease. As a model system, these mice "are p...

AIDS vaccine research offers new insights on survival

...hree years. "We found that the vaccinated monkeys lived significantly longer than the unvaccinated monkeys following infection and that levels of memory CD4+ cells remained significantly higher in the vaccinated animals," explains Letvin. "This suggests that the initial protection that the vaccine provide...

Clot-busting drug helps revive cardiac arrest patients

... alone. However, not all patients who were revived lived long enough to be discharged from the hospital. T...ived ACLS alone, 12 percent were revived, but none lived long enough to leave the hospital. The patients who were treated with tenecteplase had been receiv...

Targeted virus compels cancer cells to eat themselves

...eated with three injections of hTERT-Ad on average lived 53 days. Those receiving the control adenoviruses lived on average 29 days. Two of the hTERT-Ad mice survived 60 days and had no detectable brain tumors. A...

Ground spider diversity studied in research project

... an undergraduate, Henderson took her parents, who lived in Brenham at the time, to some of her classes. "Her enthusiasm for spiders was backed by the hard work required for her to become proficient in their identification and to study their biology," Harris said. In all of her collecting and studies, ...

Mayo Clinic collaboration mining of ancient herbal text leads to potential new anti-bacterial drug

...r thousands of years, people around the world have lived intimately with botanical healing agents and evolved effective healing traditions. "Our work shows just how much we can learn from them. But to make the most of what is fast becoming lost knowledge, we have to respect, preserve and work with traditio...

Computer-based 'games' enhance mental function in patients with Alzheimer's

...ived no cognitive intervention; these participants lived at home and did not participate in the daily activities at the daycare center. The second group participated in an Integrated Psychostimulation Program (IPP), which was a daily program that included 2.5 to 3.5 hours of cognitive stimulation tasks, mu...

Temperament linked to onset of cancer and early death in female rats

...f male rats and found that the adventuresome males lived longer. Because the male rats died of a variety of diseases, they could not establish a reason for the differences. The new study links personality specifically with cancer. ...

Too mellow for our predatory world

...he marine iguanas. For millions of years they have lived without natural predators. In the course of evolution they have become excessively tame. Hundreds of reptiles doze, spread-eagled, on black lava rocks, soaking up the sun - behaviour that would be unthinkable in an environment with predators, where r...

New dwarf buffalo discovered by chance in the Philippines

...n Luzon--indicates that this genus might have once lived throughout the Philippines, most of which is an oc...sland habitat. Further, the fact that B. cebuensis lived on a smaller island than the tamaraw and evolved into a smaller size than the tamaraw supports the h...

Researchers give name to ancient mystery creature

...ual shape of the crowns of the teeth. Horolodectes lived about 60 million years ago, soon after the dinosaurs went extinct, in a period known for its rapid diversification of small mammals. Based on careful examination of tooth and jaw fragments that have been unearthed over the past 30 years, the Universi...

Tiny bones rewrite textbooks

... other lands. The fact that even one land mammal lived there, at least 16 million years ago, has put paid to the theory that New Zealand's diverse prehistoric bird fauna had evolved there because they had no competition from land mammals. An international team led by Trevor Worthy, of the University of...

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