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Tag: "points" at biology news

There's something fishy about human brain evolution

...Valley in which early humans evolved. Dr. Cunnane points to the table scrap fossil evidence collected by his symposium co-organizer Dr. Kathy Stewart from the Canadian Museum of Nature, in Ottawa. Her study of fossil material excavated from numerous Homo habilis sites in eastern Africa revealed a bevy of c...

Powerful new tool for studying brain development

...croscope. The images are obtained at distinct time points and show where and when specific genes are expressed at each of four developmental stages. Gene expression is visible because special tags called probes bind to messenger RNA (mRNA)--the decoded form of the gene--and release a signal that can be seen...

Scientists look to the Bahamas as a model for coral reef conservation

... give at Cambridge University in November. Falkow points out that the medical community and those who fund medical research focus on curing disease. He wonders if this single-mindedness might distract researchers from appreciating the beneficial contributions of micro-organisms to the body. "Organisms tha...

Learning to love bacteria: Stanford scientist highlights bugs' benefits

... give at Cambridge University in November. Falkow points out that the medical community and those who fund medical research focus on curing disease. He wonders if this single-mindedness might distract researchers from appreciating the beneficial contributions of micro-organisms to the body. "Organisms tha...

Frog’s ear canal may provide insights for understanding human hearing loss

... which most other frogs don't have. "Our research points out an elegant and novel solution to the problem of communication in high levels of background noise," said Peter Narins, UCLA professor of physiological science and ecology and evolutionary biology, and co-author of the study. "In addition, we now a...

Common molecular 'signature' identified in solid tumors

...h keep potentially malignant cells in check. Croce points out that miRNA activity is tissue-sensitive, meaning some miRNAs may be overexpressed, or "turned on" in some of the cancers while in others they are underexpressed, or "turned off." In the six types of cancer in the study, the majority (26) of the...

Tropical Atlantic cooling and African deforestation correlate to drought, report scientists

...ncing the fall or rise of civilizations." Weldeab points out that the past 50 years are marked by deforestation and overgrazing much greater than that of the past, thus disturbing the climate system that results from the coupling of sea surface temperature and vegetation cover on land. "We can't predict ...

Carnegie Mellon U. transforms DNA microarrays with standard Internet communications tool

..."checking" the sum of a set of DNA microarray data points over time (a time series experiment) against the "summary" of the temporal response. If the two sets of results are equal, then what is captured by the DNA microarray time series is real. If the time series results produce a lower value than the micr...

'Good' bacteria could save patients from infection infection by deadlier ones

...f Jerusalem's Faculty of Medicine. Prof. Spigelman points to a recent BBC report on the poor record of bacterial infections in patients (the worst in Europe) in British public hospitals, especially involving the deadly MRSA (methacillin resistant staphylococcus aureus) bacteria. Despite being around for 40...

How the neuron sprouts its branches

...olgi outposts" play a central role as distribution points for proteins that form the building blocks of the ...dritic Golgi outposts are located at the strategic points to do just that. And I believe this is the first such specific organelle identified at a dendritic b...

Amazon trees much older than assumed, raising questions on global climate impact of region

...st in any forest on Earth. These results, Trumbore points out, are contrary to the widely held view that tropical forests are highly dynamic. "In addition, the impact of logging activity in the Amazon region may be longer-lasting than we think," Trumbore added, "because it may take centuries for these fo...

Bats use touch receptors on wings to fly, catch prey, study finds

...rol their in-flight balance. Zook's research also points to the importance of a second type of receptor cell in the membranous part of bats' wings. Nerve recordings revealed that these receptors respond when the membrane stretches. Zook calls areas on the wing where these stretch-sensitive cells overlap "s...

From one cell, many possible cures

...f cells derived from fetal or embryonic tissue, Ma points out that the mesenchymal stem cells used in his research come from adult donors. "The National Institutes of Health helped establish the Tulane Center for Gene Therapy at Tulane University as a national distributor of these cells to researchers," he...

Genes involved in biofilms

...s them together and to living or inert substrates, points out Alejandro Toledo. Although they are widely found in nature, and in many cases have beneficial effects, their study has been boosted on discovering their relation to chronic infections associated to medical implants such as those tissues involving...

Telling axons where to go - and grow

...uch as metastasis and invasion of cancer, Dr. Bach points out that "�these results indicate that Rnf6 not only plays an important role in coordinating neuronal development but may be also involved in oncogenesis." ...

Image of myosin-actin interaction revealed in cover story of Molecular Cell

...in group captured snapshots of Myosin V at several points during a hydrolysis cycle. Their use of electron cryo-microscopy made it possible to visualize flexible structural domains, which tether the Myosin V, helping to keep the protein on its actin track through the weak binding phase of the processive mo...

New technique multiplies life span in simple organisms

...l mammals share key aging-related genes, the paper points to a new direction for human anti-aging research. Longo proposes that SIR2 and possibly its counterpart in mammals, SIRT1, may block the organism from entering an extreme survival mode characterized by the absence of reproduction, improved DNA repai...

Storing carbon to combat global warming may cause other environmental problems, study suggests

...g now," Jackson said in an interview. "One of the points of this paper is that those places tend to be relatively low rainfall areas. We predict we will see a decrease in stream flow particularly in these relatively drier spots that are targets for sequestration." Almost all plantation trees are heavy wate...

MIT researcher finds neuron growth in adult brain

...as ever detected in excitatory cells. Yet evidence points to the fact that adult brains can be functionally plastic. In response to the CPG data, Nedivi and Lee revisited this question with the help of So and Huang. By applying an innovative new imaging technology that allows monitoring of neuronal struct...

Chemical compound inhibits tumor growth, size in new mouse study

...d reaction. In addition, the Penn State scientist points out that the Maillard reaction also occurs in the ...d reaction. In addition, the Penn State scientist points out that the Maillard reaction also occurs in the human body as part of the aging process, in tannin...

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