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Tag: "line" at biology news

Transgenic goat's milk offers hope for tackling children's intestinal disease

...o, they used gene-transfer technology to develop a line of transgenic dairy goats that carry the gene for human lysozyme and, consequently, produce human lysozyme in their milk. The UC Davis Study In this study, the researchers fed pasteurized, lysozyme-rich milk produced by transgenic dairy goats t...

Hope I die before I get old?

...rs old in 1965, rock star Pete Townshend wrote the line "I hope I die before I get old" into a song, "My Generation" that launched his band, the Who, onto the rock 'n' roll scene. But a unique new study suggests that Townshend may have fallen victim to a common, and mistaken, belief: That the happiest d...

Tigers get a business plan

...vationists. "We're putting our reputations on the line and holding ourselves accountable that we can grow tiger numbers," said Rabinowitz. "At the same time, we have the knowledge, expertise and track record to accomplish this goal." The plan calls for working closely with local governments and other ...

Corals switch skeleton material as seawater changes

...s, until their magnesium-to-calcium ratios were in line with the prescribed "ancient seawater" chemistries. Two months later, Ries removed the coral skeletons and used X-ray diffraction to analyze their mineral composition. He was surprised to find that corals grown in the artificial seawater with a magn...

Pollutant haze heats the Arctic

...buting factor." "The Arctic represents the front line of climate change and is projected to warm at a rate at least double that of the Earth as a whole," says University of Utah meteorology Chair Jim Steenburgh, who wasn't involved in the study. "Although the importance of greenhouse gas emissions is we...

Wasps queue for top job

...erefore with a greater chance of being the next in line to breed are much lazier than their lower-ranked nest-mates: rather than use up their energy in foraging to feed the queen's larvae, high-rankers sit tight on the nest and wait for their chance to become queen themselves. Dr Jeremy Field, UCL Depa...

Just like us, social stress prompts hamsters to overeat, gain weight

...he intrusion of the submissive hamsters. Another line of inquiry would be to compare mice and rats to hamsters. Humans and hamsters, which eat more under stress, share the same predominant stress hormone, cortisol, noted Bartness, Rats and mice, which eat less under stress, have a different primary stre...

Interfering RNA silences genes in 'slippery' immune cells

... eventually harness RNAi in new medicines. Another line of research uses RNAi as a research tool, investigating the functions of specific genes by studying what happens when RNAi temporarily silences them--a process calling "knocking down" the gene. The research by Dr. Finkel's team aims to extend RNAi t...

Patients to benefit from novel technology revolutionizing high-speed molecular imaging

...nomical to have functional and anatomic imaging in line (as a hybrid image) and in near real time for developing combined single photon emission computerized tomography (SPECT) and CT images," added the co-author of "D-SPECT: A New Solid State Camera for High-Speed Molecular Imaging." "Patient health c...

Robots manipulating animal behaviour

...w the walls, congregate around a lamp beam or even line up. When placed in the same area with cockroaches, the robots quickly adapt their behaviour by mimicking the animals' movements. Coated with pheromones taken from roaches, the infiltrator robots even fool the insects into thinking they are real creat...

Researchers find protein that silences genes

...acetylated amino acids are involved. "The bottom line is that HDA6 has very broad specificity. It can remove the acetyl groups from multiple histones and from multiple lysines of those histones" said Pikaard. When multiple acetyl groups are on the histones, the genes are turned on, Pikaard explained. ...

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

...gg and sperm cells to make fertilization possible, line the nose to pick up odors, and purify the blood, among other tasks. With such a range of abilities, cilia serve as both motors and "cellular antennae," said Dr. William Snell, a professor of cell biology at UT Southwestern and senior author of new ...

Unique soybean lines hold promise for producing allergy-free soybeans

...sed a gene-silencing technique to create a soybean line in which P34 was "knocked out." However, because of public resistance to genetically modified products researchers have been seeking a more traditional approach. Because the newly identified lines occur naturally, they can be successfully crossed int...

New angiogenesis finding may help fight cancer growth

... great numbers of them on endothelial cells, which line the inside of blood vessels. Endothelial cells form the internal structure of a blood vessel, and during angiogenesis, they migrate, starting an extension of the blood-vessel network. When Paul added NK-B to endothelial cells, "They lost the capac...

Finding the right mix: A biomaterial blend library

...example. The new study represents an innovative line of research. Working with NJCB, NIST scientists have developed a method for constructing "scaffold libraries" --collections of biomaterial scaffolds made from controlled polymer blend compositions. The library currently contains scaffolds made from b...

MIT nanoparticles may help detect, treat tumors

...mors, there are gaps in the endothelial cells that line the inside of the blood vessels. The nanoparticles can slip through these gaps to enter the tumors. Once inside the tumor, the nanoparticles can be triggered to group together by a mechanism designed by the MIT engineers. Specifically, certain enzym...

When nerve cells can't make contact

...is colleague Varoqueaux, Brose has created a mouse line that not only lacked neuroligin-1 or neuroligin-2, both of which have been associated with autism, but were missing all four known variants of the protein simultaneously. The consequences are accordingly more drastic than with autistic patients, who ...

Most widely used organic pesticide requires help to kill

...simple toxin-mediated disruption of the cells that line the insect gut. The damaged cells, according to the prevailing hypothesis, lead to starvation. An alternative hypothesis holds that the spread of the bacterium in infected insects leads to blood poisoning and death. "It was one of those assumptions...

Age-related changes in DNA repair illuminate the connection between age and genetic damage

... aging and DNA damage has long been suspected. One line of evidence supporting the connection is that defects in certain genes needed for DNA repair produce maladies that mimic those of accelerated aging. In humans and other mammals, these effects include elevated occurrence of malignancies, osteoporosis,...

How blood flow dictates gene expression

...on factor called Klf2, which resides in cells that line blood vessels, is activated by rapid, pulsed blood...osis. "We always knew that there had to be this line of communication from the vessel lining, or endothelium, to the smooth muscles, which never sees a b...

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