Tag: "samples" at biology news
The thrill of discovery: Pitt professor reveals how he gets students interested in science
...l students into "phage hunters": Working with soil samples
from backyards, barnyards, and the monkey pit at the Bronx Zoo, he and the students have identified more than 30 new bacteriophages, viruses that infect bacteria. The genomic information learned from the phages was so significant that Hatfull and the...
Undergrads hooked on research
...ool students into phage-hunters. Working with soil samples
from backyards, barnyards, and the monkey pit at the Bronx Zoo, they have identified more than 30 new bacteriophages, viruses that infect bacteria. The genomic information learned from the phages is so significant that Hatfull and his high school stu...
Why some lung cancers stop responding to Tarceva and Iressa
...developed acquired resistance. Researchers studied samples
taken from the patients' tumors at different times before and during treatment. All of the tumors had the kinds of mutations in the EGFR gene that were previously associated with responsiveness to these drugs. But, in three of the six patients, they ...
SARS surveillance via mass spectometry
...as "sequence analysis of large numbers of clinical samples
is challenging, cumbersome, and expensive," they felt that "what is needed is a rapid, sensitive, high throughput, and cost-effective screening method." Towards this goal, Liu and colleagues now demonstrate that an MS-based technique can quickly yiel...
Perchlorate found in dairy and breast milk samples from across the country
...chemistry and biochemistry, analyzed 47 dairy milk samples
purchased randomly from grocery stores in 11 states, and 36 breast milk samples
from women recruited at random in 18 states. Every sample of breast milk contained perchlorate, and ...
Probable trigger of kidney disease in diabetics identified
...of Medicine at Thomas Jefferson University studied samples
of kidneys from humans and mice with and without diabetes and looked at the effects of high glucose concentrations on the cells in the kidneys. They found that in one part of the human kidney high glucose caused a change on the surface of cells which...
Rapid, new test develped for inherited immune deficiency
...h (DIR), the new test can use the same dried blood samples
already collected from newborns and would provide ...rmal infants from those with SCID. In dried blood samples
from healthy babies, the team was able to detect an average of 1,000 of these genetic rings; childre...
TGen and Kronos initiate Alzheimer's disease study
...f Alzheimer's disease. Researchers will obtain DNA samples
from brain banks in the USA and Europe. "We could not be more excited about the possibility of discovering the remaining genes involved in the development of Alzheimer's disease," says the study's other principal investigator, Dr. Eric Reiman, Clini...
New NIST reference material reinforces fragile-x screens
...uman DNA Triplet Repeat Standard" consists of nine samples
of DNA measured and certified by NIST for triplet repeats ranging from 20 to 118. The triplet repeat standard joins more than 50 reference materials produced by NIST for quality control in clinical testing....
Study: Testing for joint substance in blood might improve diagnosis of osteoarthritis
...levels of the chemical, also known as HA, in blood samples
corresponded with how advanced osteoarthritis was in a group of rural patients, both blacks and whites. "Our study shows statistically significant differences in average levels of serum hyaluronan (HA) between individuals with osteoarthritis of the k...
Neuronal 'traffic jam' marks early Alzheimer's disease
...e models of Alzheimer's disease and in human brain samples
from people with the disease, researchers observed... They detected the same kinds of swelling in those samples
that they had seen in the mice. "This was a small, initial neuropathological study, but we believe t...
It's not all genetic: Common epigenetic problem doubles cancer risk in mice
...f extra IGF2." The team's analysis of colon tissue samples
from a dozen or so Johns Hopkins patients with sus...similar, the researchers report. A larger study of samples
from patients with and without suspected colon cancer is underway, Feinberg notes. In the mice -- a...
Growth in the sea comes down to a struggle for iron
... prohibit scientists from boarding or even sharing samples
or equipment with a vessel from another country. The American team went to work lowering equipment over the side to collect water samples. They analyzed water chemistry, nutrients, and microorganism diversity. Working to assist their Japanese colle...
Researching airborne metals in transit workers' bodies
...hool students who commuted by subway collected air samples
during their commutes, suggested that steel dust generated in the New York City subway did significantly increase the total amount of iron, manganese, and chromium that the students breathed. The levels of these airborne metals in the subway air were...
Researchers uncover mutated genes involved in lung cancer; one affects nonsmokers
...cer, Dr. Gazdar and his colleagues analyzed tissue samples
from primary tumors of 519 patients in the United States, Japan, Taiwan and Australia. Mutations in the DNA of nonmalignant lung tissue from many of these patients and from other separate cancer tissues also were examined. The researchers found mutat...
One year after groundbreaking, desert research center takes shape on the Israeli-Jordanian border
...previously identified sites in both countries. The samples
are being sent to Stanford and facilities in Jorda.... Mooney was particularly interested in collecting samples
of tamarisk, a Mediterranean plant that has become a serious nuisance since being introduced into th...
Duke researchers uncover genetic link to kidney damage after heart surgery
...he researchers performed genetic analysis of blood samples
paying particular attention to 12 candidate polymorphisms on seven genes. These target genes were chosen because earlier studies suggested that they may play a role in kidney injury. To determine kidney damage, the researchers measured the levels of ...
A new 'strategic partner' in cancer development
...chers analyzed a large number of colorectal cancer samples
from human patients. They found that L1 is present in large quantities exclusively in cancer cells from the most aggressive and invasive front of tumors and in metastases at adjacent lymph nodes. In an additional surprise finding, the scientists foun...
First step towards a non-invasive screening test for early signs of testicular cancer
...t was found that CIS cells could be found in semen samples
of patients with testicular cancer. However it wa..."When we were evaluating the first series of semen samples
we detected AP-2y positive cells in a sample from one of the healthy controls. He was a 23-year-old...
In the mating game, male wild turkeys benefit even when they don't get the girl
...ush - Krakauer captured, tagged and obtained blood samples
from male and female turkeys, and then captured flightless young, scavenged broken egg shells from abandoned nests or lifted eggs from unattended nests to obtain the DNA of offspring. His study included 126 adult turkeys - 51 males and 75 females - a...
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