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Tag: "actually" at biology news

Once given 'no respect,' cells' tiny RNAS take driver's seat

...ws that tiny bits of RNA not used to make proteins actually play central roles in normal biology and in the de...ed that two of the six microRNAs controlled by Myc actually reduce cells' ability to use E2F1's protein-building instructions. Essentially, these microRNAs act ...

Muscle repair: Making a good system better, faster; implications for aging, disease

...y in the plasminogen activator inhibitor-1 (PAI-1) actually promotes muscle regeneration, making PAI-1 "a therapeutic target for enhancing muscle regeneration." Moreover, they realized that the plasminogen system interacts with the inflammatory, growth factor and other systems in a complicated manner, indica...

Living with salt

...oteins not only cope with high salinities, but are actually "addicted" to them. However, the alga Dunaliella salina is an organism of a different streak: it is able to grow in any salinity, from the extremes of the Dead Sea to nearly fresh water. The uniquely salt-tolerant Dunaliella, which is commercially gr...

Scientists discover gene that controls speed of tuberculosis development

...estimated two billion people infected, only 5%-10% actually develop tuberculosis disease in their lifetime--the other 90%-95% appear to be able to contain the infection in a dormant state, so that they do not become ill." Dr. Schurr has spent the past 5 years researching why and how this happens. The new res...

Traditional models underestimate extinction rates

... or stochastic, variables. But few scientists have actually tested the accuracy of these models with empirical data. To do this, Drake first manipulated the available food sources in 281 populations of water fleas, because it's generally assumed that fluctuating environments, a given in the natural world, inc...

Simple explanation for complex pattern of feather development

...nimal, that signaling molecules in development can actually behave as envisioned by Turing 50 years ago. This work provides a key to some of these most basic questions of biology. The findings also indicate that more complex shafted feathers evolved from the simpler downy tufts by the addition of new players...

From a Few Wild Ancestors, a Citrus Cornucopia

...me records from the 1950s indicating that the tree actually was a lemon with the scientific name Citrus limon.... including oranges, grapefruits, and lemons -- are actually hybrids. A Chosen Few Part of this can be explained by the fact that citrus, which is native to So...

Ships bring alien jellyfish invaders to our shores

...n jellyfish, revealing that marine biodiversity is actually much higher than was thought previously," Dr Dawson says, "in retrospect it's easy to see how this wasn't noticed until now. "When you examine moon jellyfish from locations from around the world they look very similar; it's only when you analyse the...

'Gadonanotubes' greatly outperform existing MRI contrast agents

...ted them to be more effective agents. But they are actually much, much better than we anticipated, so much so that no existing theory can explain how they work." Wilson and colleagues use short segments of nanotubes, tiny cylinders of pure carbon about one billionth of a meter, or one nanometer, in diameter....

Evolution of life on Earth may hold key to finding life in outer space

...rstand how life evolved on Earth and how ribosomes actually work, which remains a fundamental problem in biochemistry." One of only a small number of groups in the nation working on the history and evolution of the core ribosomal machinery, Fox and his team of scientists focus on comparing the sequences and ...

Scientists create digital bacteria to forge advances in biomedical research

...for a bioterrorism attack is one example. "You can actually try to simulate dangerous experiments," said Cluzel, an Assistant Professor in Physics. "For instance, if you mix a pathogenic strain with a friendly strain, which one is going to win, and with what kind of speed?" ...

Disappearing arctic lakes linked to climate change

... in size or dried up completely, while other lakes actually increased in size. Researchers say as the climate warms, additional meltwater accumulated in the lakes located in the colder regions of thicker permafrost increase their size; however, if climate warming continues, even those lakes would eventually b...

DNA from feathers tells tale of eagle fidelity

...ing from at least two genetic fathers. "Our study actually stands out as a relatively rare instance in which DNA fingerprinting uncovers genetic monogamy in a bird population," DeWoody said. Unlike their smaller songbird cousins, most raptors are believed to be truly monogamous, and this study provides the ...

Scavenger cells could be key to treating HIV-related dementia

...en considered the scavengers of the immune system, actually may damage a part of the brain where many memories are stored in their attempt to attack the virus there, according to findings reported in the Journal of Virology this month. Researchers found that HIV-infected macrophages in the brain continuously...

Elusive salamanders have role in developing new sampling models

...base. Kara Ravenscroft, the project's technician, actually found the first salamander, which she trapped. In subsequent sampling she has extended the date of recorded residence by larval flatwoods salamanders in Fort Stewart ponds by two to three weeks, which is well beyond the period when experts thought th...

Women feel more pain than men, research shows

...ays, and the strategies used to cope with pain may actually make their experience worse. These conclusions ar...entrate on the emotional aspects of their pain may actually experience more pain as a result, possibly because the emotions associated with pain are negative." ...

Neurotransmitters signal aggressive cancer, offer potential for early diagnosis

...lite detectors to verify that these compounds were actually being made. We then took information gained from the mouse and asked whether the same human genes are expressed in poor prognosis as opposed to good prognosis human tumors. We found that the human genes that give rise to the key enzymes required to p...

How fish hear and make sounds at same time

...r an instant following a vocalization, the ear may actually become more sensitive than it was prior to the voicing. By better understanding these complex systems, the study offers new avenues for researchers to explore the causes of human deafness. "Hearing loss is a major pathology that humans deal with," ...

DDT-resistant insects have additional genetic advantage that helps resistance spread

... is widespread, data to support this contention is actually thin," said Professor ffrench-Constant. He believes previous work may not have looked at genetically related strains and that 'costs' may therefore be associated with the differing genetic backgrounds of insects examined, and not the resistance genes...

Stolen gene allows insect virus to enter cells

... baculoviruses get along without it? These viruses actually generate two types of infectious particles, Blissard explains: one type specialized to infect gut cells, and another that spreads infection in other parts of the insect. The latter type uses F to enter cells. An ancestor of today's baculoviruses "mig...

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