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Tag: "these" at biology news

A gene's first 'kiss' sets off that affair known as puberty

...one (FSH), directly into the circulation. In turn, these rising levels of LH and FSH cause the testes and ovaries to produce the sex hormones testosterone and estradiol, the culprits responsible for the physical changes and emotional baggage of male and female puberty, respectively. "We now have very good...

Chemists create 'Superbowl' molecule; May lead to better health

...sis and transport within the body. Over the years, these bowl-shaped molecules have been extensively studie... as models for cell and viral behavior. Until now, these molecules have had a very limited carrying capacity. "The compounds we made are bigger versions of ...

DNA Molecules Used To Assemble Nanoparticles

...ution of two different kinds of single dendrimers, these dangling lengths of DNA, typically 34-66 bases lon... over-expressed on the surface of cancer cells, so these dendrimer clusters would tend to flock to the diseased cells. The other end of the complex carries a...

Bioartificial kidney under study at MCG

... billions of kidney cells that can perform many of these important kidney functions. Human proximal tubule ...ys. Ironically, some antibiotics patients need for these infections also can harm the kidneys. Even the contrast medium needed to study kidney function can b...

Man and mouse share genome structures

...ing over regions near genes. The researchers think these sites have important regulatory functions, because...y covered by tags." The researchers speculate that these unique chromatin structures could be activating sets of HOX genes for specific developmental program...

Adding Radiation Therapy To Chemotherapy Improves Survival In Patients With High-risk Breast Cancer

... randomized controlled trial be mounted to resolve these uncertainties," they write. ...

Novel Asthma Study Shows Multiple Genetic Input Required; Single-gene Solution Shot Down

... randomized controlled trial be mounted to resolve these uncertainties," they write. ...

Jump-starting T Cells In Skin Cancer

...s by vaccinating patients with tumor proteins. How these vaccines work and why they are only effective in s...ssue of the Journal of Experimental Medicine, that these vaccines work by increasing the number of immune cells called killer T cells that can attack the tum...

Scientists ID molecular 'switch' in liver that triggers harmful effects of saturated and trans fats

...rs the opportunity to try to understand what makes these fatty acids so deleterious, and what we need to av...ing the pathways of cholesterol and triglycerides; these genes directed the liver to manufacture more cholesterol, which it does in the form of very low-dens...

A new mechanism of regulating RNA degradation

...ount of Staufen or Upf1 increased the half-life of these RNAs. Significantly, altering the amount of another NMD factor didn't affect these RNAs. Thus, Staufen1 and Upf1, together, degrade RNAs by a previously undescribed mechanism, which ...

FDA Approves Human Hookworm Vaccine for Phase I Safety Trials

...ount of Staufen or Upf1 increased the half-life of these RNAs. Significantly, altering the amount of another NMD factor didn't affect these RNAs. Thus, Staufen1 and Upf1, together, degrade RNAs by a previously undescribed mechanism, which ...

Spleen may be source of versatile stem cells

...d finding, members of thesame team now report that these potential adult stem cells produce aprotein previo...mammals.The finding both supports the existence of these splenic stem cells andalso suggests they may be able to produce an even greater variety oftissues. T...

UCSB scientists probe sea floor venting to gain understanding of early life on Earth

...he hydrothermal cooling of the sea floor occurs in these flanks, and yet these hydrothermal vents are largely unexplored. The flanks are deeper than the mid-ocean ridge crest. Coo...

UAB scientists discover the origin of a mysterious physical force

... dissolved in water in order to understand many of these processes. Two of the most important of these processes are the adherence of substances to cell membranes and the withdrawal of proteins. Both of ...

Researchers discover way to make cells in the eye sensitive to light

...earchers believethat by activating the melanopsin, these cells may gain the ability tosense and respond to light.Professor Mark Hankins, from Imperial College London and Charing CrossHospital, and one of the papers authors, comments: "It is quiteremarkable that the activation of a single gene can create a ...

University of Manchester makes made-to-measure skin and bones a reality using inkjet printers

..."The problem is getting cells into the interior of these constructionsas they naturally stick to the sides of whatever they are beinginserted into. If they stick to the sides then this limits the numberof cells which can grow into tissues, and the lack of penetration alsolimits their size. By using inkjet ...

Enzyme, lost in most mammals, is shown to protect against UV-induced skin cancer

...s, most mammals, including humans, can only repair these lesionsthrough a much less direct and elaborate pr...se enzymes.Although mice do not ordinarily produce these enzymes, which removeeither CPD or 6-4PP lesions by using visible light as an energy source,expressi...

W.M. Keck Foundation funds study of friendly microbes

... 800 different species of bacteria." "Fortunately, these microbes endow us with key metabolic functions tha...gy that is stored in fat cells. The implication of these findings is that variations in the composition of gut microbial communities among different people m...

Yellowstone microbes fueled by hydrogen, according to U. of Colorado study

...rogenmetabolism was the most likely fuel source in these environments."This work presents some interesting associated questions," said JohnSpear, lead author of the report. "Hydrogen is the most abundantelement in the universe. If there is life elsewhere, it could be thathydrogen is its fuel," Spear said. ...

It's not all genetic: Common epigenetic problem doubles cancer risk in mice

...hin the lining of the colon than normal mice. When these mice also carried a colon-cancer-causing genetic m...t usually shuts off one copy of IGF2. As a result, these mice lack H19 and have double IGF2. To isolate the effect of the extra IGF2, Rolf Ohlsson at the Up...

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Breaking Biology News(10 mins):Sabotage as therapy: Aiming lupus antibodies at vulnerable cancer cells 2Scripps Florida scientists make diseased cells synthesize their own drug 2
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