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Tag: "hybrid" at biology news

Carnegie Mellon scientists find key HIV protein makes cell membranes bend more easily

...rmost membrane of another cell to form a series of hybrid structures called fusion intermediates. Through evolution, viruses have also become skilled at fusing with cells to unload their genetic contents, which turn host cells into virus-producing factories. In the case of HIV, a molecule called gp120 init...

Researchers examine carbon capture and storage to combat global warming

While solar power and hybrid cars have become popular symbols of green technology, Stanford researchers are exploring another path for cutting emissions of carbon dioxide, the leading greenhouse gas that causes global warming. Carbon capture and storage, also called carbon sequ...

Nurtured chimps rake it in

...nctuary chimpanzees chose randomly between the two hybrid tools. The captive laboratory chimpanzees failed both tests, as demonstrated in previously published work (2). According to Dr. Sarah Boysen, who led the study, “We think our findings mean that the conditions under which chimpanzees are raised, h...

Navigable nanotransport

...permine to the vitamin folic acid and packed these hybrid molecules into the capsule's pockets. This gave them capsules with a surface covered with folic acid molecules. What for? Many tumors have a significantly increased number of folic acid receptors on the surfaces of their cells. The folic acid on the ...

Hybrid molecule causes cancer cells to self-destruct

...nosamine, or ManNAc, for short. The team created a hybrid molecule by linking ManNAc with butyrate. The hybrid easily penetrates a cell's surface, then is split apart by enzymes inside the cell. Once inside the ...

In-shell vaccine for chick disease

...Coronavirus Group at IAH Compton, explained, "This hybrid virus was able to induce immunity when inoculated before hatching. When hatched chicks were exposed to the virulent M41 strain, we observed protection rates of up to 100 percent. With the UK poultry industry sustaining losses of £23.6M a year to infe...

Technology reveals 'lock and key' proteins behind diseases

...echnology, iMYTH (or integrated membrane yeast-two hybrid system), scans cells to detect proteins that interact with key proteins called ATP-binding cassette (ABC) transporters ?proteins that, when impaired, can cause disease. One of the best known ABC transporters is the Cystic Fibrosis Transmembrane Condu...

New cell type identified in cancer development

...eradicated by the body’s immune system. "These hybrid cells are very complex. They have properties of normal and abnormal stem cells, and do not always lead to cancer ?only some of the time, and under very specific conditions," says Gao, who is also a member of the Ohio State University Comprehensive Ca...

New biofuels process promises to meet all US transportation needs

...tion engine technology. It is quite attractive for hybrid electric vehicles and plug-in hybrid electric vehicles." To grow enough biomass for the entire nation's transportation needs using the...

OHSU lab finds meth receptor that could lead to therapy

...f these drugs on mouse TAAR1 and a human-rat TAAR1 hybrid and found all three receptors respond in similar ways. "The results of this study unequivocally demonstrate that meth and amphetamine are able to directly activate this receptor in the laboratory, making it likely that TAAR1 is activated in chroni...

Gene study shows three distinct groups of chimpanzees

... chimpanzee population were rare, with most of the hybrid chimps born in captivity. "We saw little evidence of migration between groups in the wild," said Celine Becquet, first author of the paper and a graduate student in Przeworski's laboratory. "Part of that could stem from the gaps in our samples, bu...

Genetic surprise confirms neglected 70-year-old evolutionary hypothesis

...g theory of speciation says that the genes causing hybrid sterility must have diverged slowly by normal evol...omosome #4 and find the gene on it that caused the hybrid sterility. But there was no gene there. "There was a great, 'Oh no,' moment," says Masly. "I'd bee...

Nanoparticle assembly enters the fast lane

...o understand the complexity of interaction in such hybrid systems." The synthetic DNA used in the laboratory is capped onto individual gold nanoparticles and customized to recognize and bind to complementary DNA located on other particles. This process forms clusters, or aggregates, of gold particles. ...

Geneticists discover genes that make fruit fly hybrids sterile

...ation in a D. simulans gene called "Lhr" (Lethal hybrid rescue) that make these genes nonfunctional. When ...ller model, a theory from the 1930s that suggests hybrid incompatibilities (such as death or sterility) are caused by genes that have evolved from a common a...

Sunflower speciation highlights roles for transposable elements in evolution

...omes. Previous work on three independently derived hybrid sunflower species has validated this mode of speci...mined that the genome size differences between the hybrid and parental sunflower species are associated with a massive proliferation of transposable genetic e...

Researchers find protein that silences genes

...ng off of thousands of nearly identical genes in a hybrid plant. Studying the phenomenon of nucleolar domi... in which one parental set of ribosomal genes in a hybrid is silenced, Craig Pikaard, Ph.D., Washington University professor of biology in Arts & Sciences...

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

...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 considerations...

Researchers unveil strategy for creating actively-programmed anti-cancer molecules

... cancer in animal models. The study showed the new hybrid compound remained in circulation for a week. In co... axiom of immunochemistry," said Lerner. "This new hybrid technology offers great possibilities for the enhanced treatment and diagnosis of a variety of disea...

Scientists reverse evolution

...evolution works because we can reverse it." The hybrid Hoxa1-Hoxb1 gene is not fully identical to the half-billion-year-old Hox1 because it lacks Hoxc1 and Hoxd1. But Hoxc1 vanished during evolution because it was redundant, and Hoxd1 plays a minor role. So the combined Hoxa1-Hoxb1 gene performs essentia...

Invasive species alter habitat to their benefit

...century and eventually found its way inland; and a hybrid of the two species that is larger than either pare...so noted that the areas of each marsh with lots of hybrid cattails had higher nutrient levels and heavier mats of dead cattail stems than areas with only nati...

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