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Tag: "tail" at biology news

Scientists Replicate Hepatitis C Virus in Laboratory

... infectious. Also, this system only represents the tail end of the viral life cycle ?viral replication, assembly and release from host cells. Another HCV model system is needed to show the beginning stages of the viral life cycle ?viral entry into host cells and viral activity in the host cell before repl...

UCLA scientists transform HIV into cancer-seeking missile

...ted the camouflaged HIV into a vein in the mouse's tail and used a special optical camera to watch the carrier's movement. "The virus traveled through the animal's bloodstream and homed straight to the cancer cells in the lungs, where the melanoma had migrated," said Chen. When the researchers held the ...

Love's all in the brain: fMRI study shows strong, lateralized reward, not sex, drive

...bers of the opposite sex, like the peacock's fancy tail feathers that attract the peahen," Fisher noted. "But no one has studied what happened in the brain of the viewer, the individual that becomes attracted to these traits. Our study indicates what happens in the brain of the viewer as he or she becomes...

Cooperation is key—a new way of looking at MicroRNA and how it controls gene expression

...n. This inherent instability is built into the 3' tail of the mRNA in the form of noncoding stretches of RNA called AU-rich elements. Lots of genes, including inflammatory cytokines and cancer-causing oncogenes, have these AU-rich elements built in. AU-rich element degradation involves a number of diffe...

Basis for DNA ejection from single phage particles

...ral genome is packaged during morphogenesis, and a tail structure that ensures the attachment of the phage...bacterial host's cytoplasm, whereas the capsid and tail remain bound to the cell surface. This situation is very different from that found in most eukaryoti...

While on trail of dioxin, scientists pinpoint cancer target of green tea

...r proteins stay stable, serving the same role as a tail on a kite. When the two bind, HSP90 no longer turns on the AH receptor, stopping the cascade of events that would lead to the activation of several harmful genes. This weekend Palermo is receiving the Wallace Fenn Award, named after a long-time phys...

Researchers reveal secrets of flying snakes

...n a distinctive S-shape as if swimming ?moving the tail up and down and side-to-side. While gliding, these snakes make turns up to 90 degrees and always seemed to land without injury. The researchers now are looking more closely at the aerodynamic issues. They plan to use physical and computer models to ...

Scientists discover odd-ball rodent

...red a long-whiskered rodent with stubby legs and a tail covered in dense hair. But don't call it a squirrel. Or a rat. Because it's actually more like a guinea pig or chinchilla. But not quite. In fact the new species, found in Laos by scientists from the Wildlife Conservation Society (WCS) and other grou...

Cancer related gene p53 not regulated as indicated by previous tissue culture research

...at specific modifications on the easily accessible tail end, or C-terminus, of the p53 protein are crucial...around the world indicated that tinkering with the tail end prevented the protein from being flagged for degradation or activation. Instead of accumulating ...

Certain fish have a special mating preference

...words are conspicuous, elongate projections of the tail fin and are known to be subject to female mate cho...les," he said. "That is, male ornamentation of the tail fin may have evolved largely due to the pre-existing preference for an elongate structure of a simil...

IMF Launches World’s First DNA Database for Myeloma Patients

...words are conspicuous, elongate projections of the tail fin and are known to be subject to female mate cho...les," he said. "That is, male ornamentation of the tail fin may have evolved largely due to the pre-existing preference for an elongate structure of a simil...

Looks matter to female barn swallows

...n swallow ( H. rustica rustica) , males with long tail feathers attract more mates. Although many previou... of showy ornamental traits -- such as a peacock's tail or a deer's antlers -- that are costly for males to maintain but give them an edge over rival males....

Study provides insight into cellular defenses against genetic mutation

...guanosine cap is attached to the 5-prime end and a tail of repeating adenosine molecules to the 3-prime end. The cap and the tail protect the mRNA from enzymes that would otherwise destroy it from both ends. Along with its protec...

Grabbing addiction by the tail

...by crafting a peptide that mimics a portion of the tail of the glutamate receptor and, once inside a neuro...ng of amino acids ?with a structure similar to the tail of the glutamate receptor that is anchored inside the cell. In addiction, cellular machinery tugs on...

Creeping crinoids! Sea lilies crawl to escape predators, new video shows

...hed their stalk ends and flee. "It's the lizard's tail strategy," said Baumiller, who is also a curator in the UM Museum of Paleontology. "The sea lily just leaves the stalk end behind. The sea urchin is preoccupied going after that, and the sea lily crawls away." And the speed at which they move---three...

U. of Colorado researcher identifies tracks of swimming dinosaur in Wyoming

...hed their stalk ends and flee. "It's the lizard's tail strategy," said Baumiller, who is also a curator in the UM Museum of Paleontology. "The sea lily just leaves the stalk end behind. The sea urchin is preoccupied going after that, and the sea lily crawls away." And the speed at which they move---three...

Nanotechnology may find disease before it starts

...jected a solution of silica nanoparticles into the tail vein of each mouse. They then anesthetized the animals and placed them on their backs on a warm imaging table. Rosol said that Liu and her team are working on creating biodegradable nanoparticles. For the purposes of this study, however, the researc...

Attractive birds more immune against bird flu

...re called secondary sexual characters, such as the tail of a peacock, the stripes of the female gulf pipefish, and the white spot on the forehead of the collared flycatcher. In many species both males and females prefer to mate with those who have the largest or most colourful of these ornaments or who ha...

Sea coral's trick helps scientists tag proteins

...ce for Dendra and an accompanying short amino acid tail can be inserted into the gene encoding the protein...t wants to study. In living cells, the fluorescent tail is produced along with the protein, acting like a beacon to researchers who want to learn what the m...

The giant protein titin helps build muscles

Imagine grabbing two snakes by the tail so that they can't wriggle off in opposite directions. Scientists at the Hamburg Outstation of the European Molecular Biology Laboratory (EMBL) and collaborators from King's College in London have now discovered that something similar happens to a pr...

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