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Tag: "guys" at biology news

Study of energy and health in Africa focuses spotlight on charcoal and forest management

..."Most charcoal is produced in Africa by one or two guys going out in the woods, almost always without a permit and on somebody else's land, cutting down a tree or two, chopping it up, lighting it, covering it with dirt, and then hovering around it for two to four days while it becomes charcoal," Kammen sa...

Say what? Bacterial conversation stoppers

... that, in niche one, the bacteria we consider good guys might be using AI-2 and winning. And unfortunately, in niche two, the bad guys might be using AI-2 and winning." ...

Lance Armstrong through a physiological lens: hard training boosts muscle power 8%

...tudy.] "Amazing, quantified changes that get more guys off his wheel" An independent physiologist famili...inted out, "it means he can go faster and get more guys off his wheel." Effect of cancer, therapy nil The period that started when Armstrong was 21 and ju...

Mechanism for memory revealed in neurons of electric fish

...lectricity is a snapshot of the environment. These guys are swimming around and discharging at a very regular frequency. They're digitizing their environment." But a problem occurs when the fish are close to each other. They can jam each other's electrical signals. In response, one of the fish will jump ...

UCSD team unmasks family of immune system invaders

... "As a result, these bacteria proteins are the bad guys that make you sick," said Alto. "Instead of curing the illness by giving a patient antibiotics, it might be possible to target these effectors, turning their virulant actions into something benign." The researchers used a molecular "fingerprinting...

Paleontologists learn how not to become a fossil

...y upon the soft tissues of another organism. These guys have a lousy fossil record," Kidwell said. "If you're living inside the tissues, or directly attached to the tissues of another organism and it dies, then you're attached to a corpse of decaying organic matter, which is not favorable to shell preserv...

'Scent of a woman' tells male redback spiders to find a mate

...ack spiders (Latrodectus hasselti) that give these guys an edge in their deadly dating game. The study in the April 4 issue of Current Biology reports that males develop faster based on the population density of males and females around them -- the first time such a phenomenon has been shown in any animal...

Life and death in the hippocampus: what young neurons need to survive

...ween mature cells vying for connectivity and young guys competing with both the mature cells and their peers to fit in. You are selecting for the cell that performs best in this environment." The Gage lab previously showed that the rate at which new neurons emerge from stem cells depends on an animal's ...

New light microscope sharpens scientists' focus

...e a long way in the last year, from two unemployed guys with just an idea to having good jobs and a good set of data," Betzig noted. "Now if we can begin to refine this technique, we should really be able to take it to a lot of new applications." ...

Evolutionary forces explain why women live longer than men

...aped by eons of sexual competition, is putting the guys at a disadvantage in longevity. Male immune systems are somewhat weaker, and their bodies are less able to process the fat they eat, Kruger said. And behavioral causes---smoking, overeating, reckless driving, violence---set men apart from most women....

With record resolution and sensitivity, tool images how life organizes in a cell membrane

...ed for other purposes in earlier work. ''The tall guys tend to like each other and the short guys tend to like each other and shorts and talls tend to separate,'' Boxer said. ''Like likes like.'' K...

Dragonfly's metabolic disease provides clues about human obesity

...ial contests, and high-performance flight. "These guys are the jet fighters of the insect world," said Marden. Flight muscle makes up 60 percent of their body mass. The large variation in muscle output was intriguing because natural selection, over time, would weed out the submissive, poor flyers if th...

Evolution and the workaround

...mechanisms to perform old tasks. Somehow the bad guys find a workaround. That observation led Norman Pavelka, Giulia Rancati, and Rong Li, researchers at the Stowers Institute for Medical Research in Kansas City, MO, to step back and consider the basic process by which cells adapt to the loss of seemi...

Genetic surprise confirms neglected 70-year-old evolutionary hypothesis

... a combination that includes no gene at all. These guys are sterile because they completely lack a gene that's necessary for fertility." The gene, called JYAlpha, is one of the same genes that is essential for sperm motility in the flies, as well as in humans and other mammals. Masly's work shows a back...

Study finds mercury prevalent in many western fish

...r an otter," Hughes said, "I'd be concerned. Those guys are loading up on fish containing mercury and we don't really know at what levels they may be affected. In birds, the effects of mercury contamination are neurological or behavioral ?and often subtle. They may not clean their young, or they may leave...

How plague-causing bacteria disarm host defense

Effector proteins are the bad guys that help bacterial pathogens do their job of infecting the host by crippling the body's immune system. In essence, they knock down the front door of resistance and disarm the cell's alarm system. Now, researchers at the University of California, S...

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