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Tag: "kinds" at biology news

Basic work on E. coli identifies two new keys to regulation of bacterial gene expression

...ntributed by scientists from the UW-Madison. "The kinds of processes that we study in E. coli happen in a wide variety of bacteria of medical, environmental and agricultural importance," notes Rick Gourse, a professor of bacteriology who published the Cell paper along with a team from his lab. "This knowl...

UC Davis researchers reveal apples' protective ways

...one way in which flavonoid-rich apples inhibit the kinds of cellular activity that leads to the development of chronic diseases, including heart disease and age-related cancers. "We've known for a long time that it's the flavonoids in fruits that are protecting the body. We just haven't known exactly how....

Gene screen for breast cancer better than pathologist's 'eye'

...d they developed to screen body fluids for certain kinds of cells and some of their genetic blueprint is twice as accurate at spotting breast cancer cells as a pathologist's view with a microscope. The screen, developed by Sara Sukumar, Ph.D. and Mary Jo Fackler, Ph.D., first separates cells from fluid,...

Invasive species alter habitat to their benefit

...ying marshes in northern Michigan to find out what kinds of cattails were there. The state is home to three cattail species: the native broad-leaf cattail; the invasive narrow-leaf cattail, which was introduced on the east coast in the early 19th century and eventually found its way inland; and a hybrid of...

Carnegie Mellon researchers discover key deficiencies in brains of people with autism

... activated when participants with autism read both kinds of sentences, while those regions of the brain were only activated when the control group read the high-imagery sentences. The results also replicated the researchers' findings in the Cerebral Cortex study, in that functional connectivity was lower a...

Prozac's target revealed

...land have identified which among several different kinds of cells in the brain is the chief target of the w...the telltale marker proteins produced by different kinds of cells in the brains of adult mice, the researchers first defined discrete steps in the complex pr...

Prevention is the best option: fighting autoimmune diseases

...d optics and electronics toanalyse and purify many kinds of cells at a rate of over 25,000 cells every second. This technology is able to produce results that cannot be obtained by any other method as it allows every cell to be identified and sorted on an individual basis. "The ability to detect regulator...

Biofuels researcher searches for new sources

...ages in Montana. People can make fuel from many kinds of plants, though over 90 percent of ethanol made in the United States comes from corn grain. However, other sources of ethanol are needed, because even if the entire United States' corn crop was used for ethanol, it would meet only 10 percent of the...

Pure novelty spurs the brain

...ld compare the subjects' response to the different kinds of oddball images to distinguish the brain's reaction to pure novelty itself from the other possible sources of brain activation, such as emotional arousal. In a second set of oddball experiments, the researchers sought to determine whether the SN/...

Lack of key enzyme associated with development of rare tumor

...de production in adrenal cells as well as in other kinds of cells in the body. Because they lacked PDE11A, the patients' adrenal cells had higher levels of cyclic nucleotides. The researchers believe that these higher cyclic nucleotide levels led to the formation of tumors. The gene for PDE11A contains ...

Dopamine drug leads to new neurons and recovery of function in rat model of Parkinson's

...eriments to learn if using drugs that act on other kinds of receptors might stimulate neurogenesis in Alzheimer's disease and other neurodegenerative diseases. ...

'LEGO-Like' building blocks to halt cell growth wins Hebrew University prize

...rocess as somewhat analogous to building different kinds of structures through the use of LEGO. Qvit, a student of Prof. Chaim Gilon of the Department of Organic Chemistry, has shown, for example, that with a particular combination of peptides and scaffold design, it is possible to create a synthetic mol...

Copying nature could save us energy, study shows

...been quick to see the potential for developing new kinds of products from nature, it is only now that we can see the potential for making energy savings too," said Professor Vincent. "Given the growing demands for improving our energy-efficiency and reducing the amount of pollution we produce, biomimetics...

Nanotubes used for first time to send signals to nerve cells

...riments, the scientists also studied how different kinds of SWNTs affected the growth and development of neuroblastoma cells. They compared cells placed on mats made of "functionalized" SWNTs, carbon nanotubes with additional molecules attached to their surfaces that may be used to guide cell growth or cus...

'Cellular antennae' on algae give clues to how human cells receive signals

...model organisms in which it's possible to do these kinds of studies," Dr. Snell said. Normally, cilia ?also called flagella ?are built and maintained by an internal bidirectional, escalator-like system that ferries molecules to and from the tips by a process called intraflagellar transport, or IFT. Th...

Researchers find that bumblebees' flower choice matters

...of numbered holes. In this way, she can rotate the kinds of potted plants that are dropped in each morning and the density of each species in the plot. On any given day, Flanagan will trim the plants so that each has the same number of flowers on it. Then she tracks one bee at a time, calling out its exa...

Tests for 'face-blindness' reveal disorder may not be so rare

...t the brain processes faces differently than other kinds of objects. The condition can be embarrassing and lead to social isolation: Severe prosopagnosics may mistake complete strangers for acquaintances even as they fail to recognize family members, close friends, spouses, and even themselves. Many repo...

Striking the right balance between excitation and inhibition

... in its sibling. "There are thousands of different kinds of neurons in our incredibly complex nervous syste...s used in similar ways elsewhere to make different kinds of neurons." The neurons in the dorsal spinal cord analyzed by the Goulding lab form a relay statio...

Fire ant-attacking fly spreading rapidly in Texas

...fire ants are assaulted by as many as 12 different kinds of phorid fly in an area smaller than a football field. "No single phorid species will be a magic bullet," he says. Fire ants are not typically pests or even common in South America in large part because of harassment by the phorid flies. In the ...

Tarantulas produce silk from their feet

...pinneret. Many spiders can produce seven different kinds of silk. Scientists will look at the genes involved in silk production from the feet, compare them to the gene family that leads to spinneret silk production, and be able to better determine whether silk was originally used for traction, or whether t...

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