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Tag: "individual" at biology news

Cities change the songs of birds

...oorn and another coauthor, had shown that songs of individual birds were adjusted to local traffic noise conditions. The researchers had shown that great tit males in territories with loud low-frequency noise used fewer low-frequency song notes compared to nearby individuals in quieter territories. That single-...

Tiny Tampa Bay fish key to evolution of immune system

...id. That means scientists can actually see where individual hydrogen atoms are positioned in the protein's core, providing clues as to which atoms are participating in key stabilizing interactions. Doctors often use infusions of antibodies to bolster immune systems weakened by cancer or other conditions, bu...

New research identifies gene important for nicotine's effects on the brain

...chers have begun to make very strong links between individual molecules in the brain and nicotine-related behaviors," said Picciotto. "By identifying molecules and changing their activity we can understand how overall behavior is changed. " Picciotto's work explored how the brain changes when it receives nic...

Recycling technology

...fferent LCDs or the mixture will be separated into individual components for re-sale."...

A silent pandemic: Industrial chemicals are impairing the brain development of children worldwide

...as been insufficient research done to identify the individual chemicals that can cause injury to the developing ...e. It is silent because the subclinical effects of individual toxic chemicals are not apparent in available health statistics. To point out the subclinical risk t...

Who gives stem cells their marching orders?

...us, to expand their pool of stem cells, and to let individual cells know where they are with respect to their neighbors. However, to carry out these tasks, the Nodal protein must be cleaved by specific enzymes. The enzymes act as a sort of regulatory switch, increasing the stem cells' production of Nodal and pr...

Fantastic Voyage: A new nanoscale view of the biological world

...tastic Voyage, doctors might soon be able to track individual donor cells after a transplant, or to find where a...it possible to image and quantify molecules within individual mammalian or bacterial cells. Claude Lechene and colleagues describe the development of multi-isotop...

Learning during sleep?

...y succeeded in measuring the membrane potential of individual interneurones (neurones that suppress the activity...ex. This allowed them to link the behaviour of the individual nerve cells with that of the cerebral cortex. The researchers discovered that the interneurones they...

To slow AIDS in Russia, treat HIV-positive addicts, Stanford study says

...s. Antiretroviral therapies now combine multiple individual drugs to reduce the amount of virus in a person's body. The cumulative effect of two or three medicines works better than a single one to keep the virus at bay. Antiretroviral therapies have the added benefit of reducing the chances that an infec...

Gene signature assesses breast cancer outcomes

...ing studies for optimizing treatment selection for individual patients." The 70-gene signature will be prospectively tested in a larger study called MINDACT, a trial coordinated by the European Organization for Research and Treatment of Cancer. This trial will assess whether the 70-gene signature can better id...

New technique boosts size of proteins that can be analyzed

...gh both the masses of the whole protein and of the individual pieces. By matching the weight of the whole protein and its pieces with those of known protein sequences in a database, they can identify the protein. Any differences in mass with known proteins can help researchers also find where and how proteins h...

Train your brain to hear your friends at a party

...he fact that we have two ears, and each detects an individual sound at a slightly different time (a sound coming from the left will reach the left ear slightly faster than it reaches the right ear). This is known as binaural or "spatial" hearing because it helps us identify where a sound is coming from and to c...

Gene-bender proteins may sway to DNA

...imilar to previously reported time-scales on which individual base-pairs that hold the two DNA strands together were transiently breaking. That led us to conclude that the DNA is able to bend or kink on its own, at weak points created by the transient opening of base-pairs, and that the protein recognizes and b...

Hopkins researchers discover how brain protein might control memory

.... In fact, it has been long known that stimulating individual nerve cells - by an act as simple as exploring new environs, for example - causes the cells to make more Arc protein almost immediately. "Arc is an instant and reliable readout for active cells in the brain," says Worley. But although scientists knew...

One signal elicits thousands of answers

...stakingly accumulated, mainly through the study of individual molecules in specific pathways. This approach may fall short though, because the cellular answer to environmental stimuli often doesn't show on the level of production but the modification of proteins after their synthesis. "Phosphorylation is the mo...

Researchers identify new weapon to fight deadly bacterial sepsis

...s said. When a drug is approved for one human use, individual doctors may try it out against other conditions where it appears warranted. Srivastastava, senior author of a paper on the sepsis discovery to be published online Oct. 9 in the journal Circulation, explained that in this disease, "You can treat a...

Stroke symptoms common among general population

...ater. A stroke risk score was calculated for each individual based on demographics, behaviors and other risk factors, with higher scores indicating a greater risk for stroke. A total of 3,292 (17.8 percent) of the participants reported having had one or more stroke symptoms. Eight and one-half percent repo...

Detailed 3-D image catches a key regulator of neural stem cell differentiation in action

...o different tissue types. Being able to manipulate individual switches would allow scientists to nudge embryonic stem cells into becoming specific cell types, a plus for both basic research and potential therapies. "At the moment, the differentiation of stem cells into neurons in a Petri dish is a little bit...

Powerful genome ID method extended to humans

.... The method uses fluorescence microscopy to image individual DNA molecules that have been divided into orderly fragments by so-called restriction enzymes. By imaging large numbers of an organism's DNA molecules, optical mapping can produce a map of its genome at a relatively low cost. An optical map lack...

Mapping the mouse genome

...forts to pinpoint the precise location of genes on individual chromosomes. ...

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