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Tag: "origins" at biology news

Prozac's target revealed

...region of the brain (the "dentate gyrus"). But the origins of these neurons, and how Prozac promotes their existence, have been a mystery until now. By profiling the telltale marker proteins produced by different kinds of cells in the brains of adult mice, the researchers first defined discrete steps in the...

South Pacific plant may be missing link in evolution of flowering plants

...s main peer-reviewed publication and can trace its origins back to the 1890's. And with a new Editor-in Chief, Professor David Butler, and a new partnership with Blackwell Publishing, the Journal is moving from strength to strength. Now available both online and in print, the Journal is breaking new ground ...

Dolphins at risk

...s main peer-reviewed publication and can trace its origins back to the 1890's. And with a new Editor-in Chief, Professor David Butler, and a new partnership with Blackwell Publishing, the Journal is moving from strength to strength. Now available both online and in print, the Journal is breaking new ground ...

NHGRI announces latest sequencing targets

...e, this set of ten targets is likely to reveal the origins of other genes important for multi-cellularity in all such animals, including humans. The ten targets, all of which involve relatively small genomes, include six to be sequenced at high-density genome coverage: Capsaspora owczarzak; Sphaeroforma arc...

Ancient global warming drove early primates' dispersal

...ska. A third hypothesis is that primates had their origins in Africa or Asia and traveled through North America to reach western Europe. Finally, it has been suggested that the group originated in Asia and fanned out eastward to North America and westward to Europe. In the new research, U-M paleontologist ...

Production of key Alzheimer's protein monitored for first time in humans

...r an important and longstanding question about the origins of Alzheimer's disease: Do Alzheimer's patients ha...dition to helping scientists better understand the origins of the condition, will likely help them improve its diagnosis and treatment. The scientists' resul...

UAB researchers confirm HIV-1 originated in wild chimpanzees

...hough researchers have long suspected that HIV-1's origins lie in some way with chimpanzee infection through a closely related virus SIVcpz (simian immunodeficiency virus from chimpanzees), only a few captive apes had been found to harbor SIVcpz. In the study, UAB Professor of Medicine Beatrice H. Hahn, M.D...

Novel connection found between biological clock and cancer

...n timing, cell cycle progress, and potentially the origins of some cancers." Dunlap is a co-author of the pa...heir work can help advance understanding of cancer origins as well as the timing of anti-cancer treatment. ...

UF scientists trace origin of shark's electric sense

...ing development, and have been used to explore the origins of limbs and brain cells. In the current research, scientists used genetic markers to trace neural crest cells. "Dye labeling would be interesting and further test the idea that electroreceptors contain neural crest cells," Cohn said. ...

Less is more, gene study shows

...oS Biology. Researchers who speculate about human origins have come up with three main scenarios for how we ended up with our unique traits, Zhang said. The first possibility is that we acquired completely new genes that other apes don't have. Another is that some of our genes have taken on different functi...

Born with a love of speech

... test, but one that's central to understanding the origins and dynamics of humans unique propensity for speech. Now a McGill University psychologist believes she's separated out the complicating effects of the uterine sound barrier. And the results, says Dr. Athena Vouloumanos, point to a genetic predilectio...

New DNA 'fingerprinting' technique separates hemp from marijuana

...hemp cultivation is permitted, but in establishing origins of seized drugs and, therefore, conspiracy in drug distribution networks. It also could be used in criminal defenses against claims of conspiracy." The technique chops up DNA and generates numerous fragments of DNA, each defined by particular "marke...

'Executive' monkeys influenced by other executives, not subordinates

...s could also have application to understanding the origins of autism, said Platt. One theory, for example, holds that high levels of testosterone in utero cause "hypermasculinization" of the brain, which suppresses the reflexive ability to orient socially -- a characteristic of autism, he noted. Also, he sai...

Ernst Mayr's theory illustrated in genetic epidemiology studies

...ht that founder events were very important in the origins of new species. These occur when a very small population of a species gets established in a new area. Because the population is very small, there is a lot of genetic randomness, and there is only a subset of the genetic variation of the ancestral p...

Powerful new tool for studying brain development

...p will likely help scientists discover the genetic origins of brain cancers, which could speed development of novel drugs to treat them. The continual updating and completion of the BGEM Web site will be crucial to scientists. More than half of the approximately 25,000 genes in the mouse are thought to be i...

Human prostate grown from embryonic stem cells

...c stem cells provides a new tool for examining the origins of cancer and role of primitive stem cells. Research collaborators are the Monash Institute of Medical Research, Monash Immunology and Stem Cell Laboratories, Department of Anatomy, University of California, San Francisco, USA, Australian Stem Cell ...

Parents need to be educated about HPV vaccinations for daughters

...ible in their teenage and young adult years. "The origins of cervical cancer lie in HPV infection of the cervix, a sexually transmitted infection most frequently acquired by women shortly after they start sexual activity. In a minority of women, the HPV infection persists and may result in pre-cancerous ch...

Dog genome sequenced

...phological and behavioral variation in dogs, their origins and domestication, and characteristics of their genome. Chapters are devoted to discussing the genetic basis of canine diseases, as well as health initiatives aimed at curing diseases in dogs by approaches that include genetic testing and gene therap...

Scientists fetch useful information from dog genome publications

...phological and behavioral variation in dogs, their origins and domestication, and characteristics of their genome. Chapters are devoted to discussing the genetic basis of canine diseases, as well as health initiatives aimed at curing diseases in dogs by approaches that include genetic testing and gene therap...

Ancient humans brought bottle gourds to the Americas from Asia

...aring the plants' genetic make-up to determine the origins of the New World gourds. "For 150 years, the dominant theory has been that bottle gourds, which are quite buoyant and have no known wild progenitors in the Americas, floated across the Atlantic Ocean from Africa and were picked up and used as conta...

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