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Tag: "short" at biology news

Genome sequencing is for ecologists, too

...overage of all 12 pairs of chromosomes. Daphnia's short generation time and small genome (a mere 200 million base pairs) makes it an ideal organism for laboratory and field studies of how environments influence -- and how they're influenced by -- an organism's genetics. The animals are common in lakes and...

The evolution of food plants: Genetic control of grass flower architecture

... inflorescences relative to wild type plants, with short branches replaced by long, indeterminate ones, suggesting that the ra2 gene plays an important role in controlling inflorescence architecture. A recent publication in The Plant Cell (Bortiri et al.) reports that ra2 encodes a putative transcription f...

Warbling whales speak a language all their own

...rigid. The whales repeat unique phrases made up of short and long segments to craft a song. There are multiple layers, or scales, of repetition, denoted as periodicities. One scale is made up of six units, while a longer one consists of 180-400 units. The combined periodicities give the song its hierarchic...

First SCID gene chip to be introduced at Academy meeting on immunodeficiencies

... technology could have been accomplished in such a short period of time. The introduction of this new technology will have significant impact not only on SCID newborns but a wide variety of diseases and disorders," said Fred Modell, co-founder of the Jeffrey Modell Foundation. In October 2005, the Founda...

Concern over fast tracking of new drugs

...se in relapsing multiple sclerosis on the basis of short term results from two unpublished trials. The FDA granted approval before final trial and cumulative safety data were available. Natalizumab was predicted to be the leading drug for multiple sclerosis, with estimated annual sales in excess of $2bn. ...

In the mind's eye: How the brain makes a whole out of parts

...erhaps even memory and cognitive functions. In the short term, such work is driven by curiosity about one of the fundamental mysteries: how the brain works. "Our ability to see is one of the great evolutionary accomplishments of the human brain," Connor said. "We still don't know how the visual system acc...

Scientists one step closer to cancer vaccine

...immune defence. The researchers have identified a short peptide molecule that the T cell in the study recognises. Using this peptide, the researchers can vaccinate and protect against the spread of tumours from different tissues, including melanoma, colon cancer, lymphoma, and fibrosarcoma. "So far we've...

International HIV/AIDS trial finds continuous antiretroviral therapy superior to episodic therapy

...the trial. "We were surprised to learn that in the short term, episodic antiretroviral therapy carries such an increased risk without evidence of sparing patients the known side effects associated with ART." The University of Minnesota's James Neaton, Ph.D., another principal investigator and chief biost...

Scientists discover that widely available drug also helps fight kidney disease

...ed by the inherited kidney disease known as ADPKD, short for autosomal-dominant polycystic kidney disease. In the U.S., the number of individuals affected by ADPKD is greater than the number affected by cystic fibrosis, muscular dystrophy, hemophilia, Down's syndrome, and sickle cell anemia combined. The d...

Utah researchers confirm chromosome may harbor autism gene

...ss chip from Affymetrix, Inc. This chip has 10,000 short segments of DNA with known gene sequence variations, called single nucleotide polymorphisms (SNPs), attached to 3/8 by 3/8-inch area. The DNA strands of the family members were broken up and then bonded to the DNA on the chip, allowing researchers t...

Spousal illness can trigger partner death

... he notes. The period of greatest risk is over the short run, within 30 days of a spouse's hospitalization or death. Over this time frame, hospitalization in a spouse can confer to a partner almost as much risk of dying as the actual death of a spouse. "Spousal illness or death may impose stress on a part...

Behavioral studies show UV contributes to marsupial color vision

...o types of cone photoreceptors--those sensitive to short (SWS) and medium-to-long (M/LWS) wavelengths. Tric...three spectrally distinct cone types, sensitive to short (SWS), medium (MWS), and long (LWS) wavelengths, is a common feature of Australian marsupials. Howev...

Faster immune system testing set to improve poultry quality

...hy food. A particular attraction is the relatively short turn around ?five to eight weeks for broiler chickens. However production involves intensive housing and management to maximise output ?leading to an increase incidence of disease. And, because poultry is a global industry, similar disease problems a...

'Word-vision' brain area confirmed

...e patient could recognize long words as quickly as short ones; but after the surgery, the recognition time increased linearly as a function of word length. Such findings indicated that the patient had been reduced to recognizing words letter by letter. "How could there be a piece of neural tissue dedicate...

Sea coral's trick helps scientists tag proteins

...h GFP, the sequence for Dendra and an accompanying short amino acid tail can be inserted into the gene enco...generate ultraviolet light can be expensive and in short supply. "We anticipate that Dendra will broaden considerably the circle of PAFP users," he said. ...

Protein 'nanosprings' most resilient found in nature

...ve a very unusual structural design ?consisting of short anti-parallel alpha helices that self-assemble into stacks -- that allows them to quickly and robustly unfold and refold," Bennett said. "It's hard to believe, but it happens. You have to wonder whether their structure plays an important functional r...

Wisconsin scientists find a way to make human collagen in the lab

...in because they had no way to link the easily made short snippets of collagen into the long, fibrous molecules necessary to mimic the real thing. But now a team of scientists from the University of Wisconsin-Madison, writing this week (Feb. 13, 2006) in the Proceedings of the National Academy of Sciences ...

Carbon cycle was already disrupted millions of years ago

...ere large-scale changes in the carbon cycle over a short geological timescale of several tens of thousands of years. From the results Van Breugel deduced that large quantities of 12C in the form of CO2 or methane were suddenly released into the atmosphere. This could have been the result of methane being...

U of MN researchers develop way to visualize synchronized interactions of nerve cells in the brain

...tion, tiny magnetic fields from the brain during a short period of time. They studied this interaction in research subjects who looked at a spot of light. Georgopoulos used MEG data from 248 sensors to detect the changing interactions over time. The measurements they recorded represent the workings of ...

UCLA scientists uncover mechanism of response to targeted therapy

...dded surgical procedure. And we can see, in a very short time, probably in less than a week, whether the drug is working." The study was a collaboration of researchers from the Jonsson Cancer Center, the Crump Institute for Molecular Imaging, the Howard Hughes Medical Institute and the UCLA departments of...

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