Tag: "bit" at biology news

Three inferior prefrontal regions of the brain found receptive to somatosensory stimuli

...vember 19, 2002) - Bethesda, MD -- We know quite a bit about the orbitofrontal cortex (OFC). It is part of the frontal lobe that lies superior to the orbit of the eyes. This area of the brain plays an important role in emotional behavior, receives direct inputs from the dorsomedial thalamus, temporal co...

First potentially clinically useful independent marker for lung cancer identified

...mes made when cells divide: they remove the faulty bit of DNA and insert a corrected copy. This repair stops errors being transmitted through generations of daughter cells. Without the repair the daughter cells would gather further mistakes and the damage would multiply, resulting in a group of rogue cel...

Photosynthesis analysis shows work of ancient genetic engineering

... State University. "How it could have evolved is a bit mysterious." Photosynthesis is one of the most imp...l these metabolic pathways get borrowed and bent a bit and changed." Blankenship points out that nature's way of creating useful and complicated chemical s...

UC Berkeley, Joint Genome Institute target chloroplasts for clues to green plant evolution

...mitochondria or chloroplasts, we can pull out this bit of DNA that is physically separate from the nuclear genome and get this collection of homologous genes. So we get a pretty good collection of genes for one price." Both chloroplasts and mitochondria originated more than a billion years ago, when bact...

It may take a mouse to understand the behavior of 'jumping genes'

...ch continually divide and multiply. Like an errant bit of computer code that gets reproduced and spread online, retrotransposons are adept at being copied from one location and placed elsewhere in the chromosomes. When retrotransposons are inserted into important genes, they can cause disease, such as he...

UC Riverside study suggests placentas can evolve in 750,000 years or less

...with a succession of photosensitive organs, each a bit more complex than its predecessor and each favored by natural selection because of the advantages that the possessor received. Visualizing such a process would be easiest if steps in this sequence were preserved in closely related living organisms; ...

World-first Australian truffle find

...s the moment I picked it up in the field. I got a bit excited but I couldn't be absolutely certain. So I rushed back to the lab and put it under the microscope and, immediately I saw the characteristic Amanita structures. "I went crazy. At least, I am sure the people in the lab thought I was crazy...

Food for thought: Cells dine on their own brains to stay fit and trim

... possessions such as its DNA. Eating it would be a bit like lunching on your own brain. Goldfarb, however, found that the yeast can eat its nucleus by taking it apart piece by piece, removing non-essential bits and leaving behind the essential components such as the chromosomes. "In human society, the bu...

MIT sugars research affecting bypass patients, drug industry

... worldwide. Sasisekharan himself is excited--and a bit awed--by the applications that are resulting from his work. "It's very often easier said than done to translate an idea to reality," he said. "To see it happen is really a humbling experience."...

Worm sex receptor identified

... cell cycle and cell division, he said. "We are a bit unusual in studying C. elegans oocytes (eggs), but we're interested in the same fundamental questions of how the oocyte makes a crucial cell cycle transition and how that is coordinated with fertilization."Miller and Greenstein got a welcome boost in...

Blood banking systems improving in China, more progress needed

...from their ancestors and that losing even a little bit can be harmful," she says. The researchers note that important advances have been made in increasing the number of volunteer donors since 1998, when a law went into effect banning clinical use of paid-for whole blood. But even in 2000, only 67 perce...

Oxygen key switch in transforming adult stem cells from fat into cartilage

...njuries. We envision being able to remove a little bit of fat, and then grow customized, three-dimensional pieces of cartilage that would then be surgically implanted in the joint. One of the beauties of this system is that since the cells are from the same patients, there are no worries of adverse immun...

The Fragile X syndrome protein as RNA distribution hub

...on a genome-wide basis. In practice, APRA works a bit like a homing beacon attached to a photocopier: Eberwine connected an antibody that specifically binds to FMRP to a DNA molecule that can bind to the RNA near the FMRP protein. In the presence of enzymes, the DNA molecule helps copy these RNAs into c...

Calient Networks chosen as core platform for Optiputer

...apabilities allow the system to rapidly switch any bit rate or protocol that exists today, or is anticipa... like OptIPuter. First, it's truly transparent to bit rates and protocols. Together with the industry's shortest path length through the switch, this mean...

Marine biologists probe 'black box' mysteries of the sea

...t are chopped up into smaller ones. In fact, every bit of coastline might be a small neighborhood that we can manage and try to preserve on its own." Palumbi and fellow Hopkins biologist Mark W. Denny will discuss this new approach to marine ecology at a symposium titled "Opening the Black Box: Understan...

Can't stand the pain? Your genes may be to blame

...o had two copies of the val form withstood quite a bit more pain than others in the study, while at the same time reporting that they felt less pain and fewer pain-related negative emotions," says U-M neuroscientist and lead author Jon-Kar Zubieta, M.D. "This common genetic variation appears to influence...

Birth control pill may provide relief for PMS

...ffected their daily activities moderately, quite a bit or extremely was cut nearly in half (from 30 percent of participants to 16 percent). Similarly, the number of study participants reporting that PMS affected their general well-being moderately to extremely dropped 42 percent (from 35 percent of women...

Optical trap provides new insights into motor molecules - nature`s ultimate nanomachines

... apply a sideways force, you slow down the motor a bit but not much - 30 percent or so,'' said physics graduate student Joshua Shaevitz, co-author of the PNAS study. ''In contrast, when you pull backward, the molecule slows down a lot, which you'd expect.'' The surprise came when a force was applied from...

A subtle tool to study mankind's diseases

...who headed the current study. "Sometimes they're a bit over-industrious; they put in pieces that look rig...led homologous recombination, this process works a bit like a "find-and-replace" command in your word processor. Imagine you have typed "Stephen Q. Gould" ...

From biology to computing and back again

...or a candidate solution), "gene" (for the encoding bit or bits that yield a part of the solution), and "mutation" (the deliberately random changing of a piece in the processing to see potential variations in a puzzle's ultimate assembly). As computing benefits from mimicking the way biology works, mathem...

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