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Tag: "front" at biology news

Stroke study sheds light on left-right brain divide

...search focused on damage to the frontal lobes, the front part of the brain which is known to be responsible for aspects of language, decision making and learning. The team found that people who had damage to their left side were more likely to realise they had made a mistake, and then correct it, compared ...

Nurtured chimps rake it in

... cloth (non-functional). The reward was placed in front of the rigid side of one rake, and in front of the flimsy side of the second rake. The animals who picked the rake with the food reward on the ...

How plague-causing bacteria disarm host defense

...'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, San Diego (UCSD) School of Medicine have identified a novel molecular target for an effector protein called YpkA, one of several effectors of th...

How to steer a moving cell

...anize specific groups of signaling proteins to the front or back of the cell is what drives cell polarizati...esearchers developed a method to cross section the front and back of the chemotactic cell in order to analyze the components of its protein network. The cel...

A rarity among arachnids, whip spiders have a sociable family life

...oke their offspring with their long, thin whiplike front legs and how the siblings congregate in social gro... long, have two elongated pedipalps (like arms) in front tipped with stilettos that are used to capture prey. The first pair of legs has developed into long ...

Trusting your instincts leads you to the right answer

...participants were asked to locate the only back to front version of a repeated symbol on screen and were given between zero and 1.5 seconds from the moment their eyes had landed on the odd one out to scrutinize the image. Participants had to decide whether the odd one out was on the left or the right-hand ...

Fighting to keep Darwin in the classroom

...ationism ammunition for our school teachers on the front lines of this ongoing battle. Today, on Darwin's 198th birthday, Springer announces plans for a new journal which will do just that. A father-and-son team—a world-renowned evolutionary biologist and a highly skilled and sophisticated science high s...

Is there a pilot in the insect?

...er land, the image of the ground below sweeps from front to back across the central part of the visual field, creating an "optic flow", which is defined as the angular speed at which the ground contrasts move past. By definition, this angular speed is equal to the ratio of the horizontal speed and the alt...

20-year study shows significant rise in childhood obesity, especially among girls

...tries such as the USA. But they spend more time in front of televisions and computers and tend to do less physical education at school than before" says Dr Holmback, who is also a visiting research fellow at the University of Chicago, USA. "As societies become more technological, various aspects of eve...

Intravenous nanoparticle gene therapy shows activity in stage IV lung cancer

... All patients on the trial had been treated with front line cisplatin combination chemotherapy, which failed to halt their disease. The clinical trial continues. No maximum tolerated dose has been established, Lu says. The nanoparticle delivery system consists of a plasmid gene expression cassette ...

Making mice with enhanced color vision

... "If you gave mice a new sensory input at the front end, could their brains learn to make use of the extra data at the back end?" asks Jeremy Nathans M.D., Ph.D., professor of molecular biology and genetics, neuroscience, and ophthalmology at Hopkins. "The answer is, remarkably, yes. They did not requ...

Tears reveal some of their deepest secrets to researchers

...g symptoms that includes microscopic damage to the front of the eye. The eyes may ache, burn, feel extremely dry or excessively tear. The researchers report their findings in the current issue of the journal Investigative Ophthalmology and Visual Science. They collected oily meibum secretions from th...

Two nerve cells in direct contact

...ent, the objects flow by laterally, objects at the front increase in size and objects further away hardly c... seems initially to react only to the movements in front of its own eye (ipsilateral), but remain blind to movements in front of the other eye (contralateral...

Road-crossing in chimpanzees: A risky business

...ugh adaptive spatial patterning, moving toward the front of the group when traveling toward potentially unsafe areas, such as waterholes, and bringing up the rear when retreating, but comparable data on great-ape progression orders have been lacking. Crossing of man-made roads, sometimes necessitated by in...

New drug blocks influenza, including bird flu virus

Opening a new front in the war against flu, researchers at the University of Wisconsin-Madison have reported the discovery of a novel compound that confers broad protection against influenza viruses, including deadly avian influenza. The new work, reported online this ...

Fishy cooperation

...moray eel resting in a cave by shaking its head in front of the moray in this video.) ...

New system could drastically reduce herbicide use

... weed is identified, a robotic arm attached to the front of the machine engages a device the researcher calls "a custom-designed end effector." There are two layers to the device, according to Tian. One layer cuts the weed, while the second layer applies herbicide to the cut weed. "This type of appli...

Edge density key to controlling gypsy moth spread

...raps set along the expanding gypsy moth population front for their theoretical model. The pheromone trap da... slowed by suppressing outbreaks near the invasion front (within the populated area), to reduce the number of dispersers to below the donor threshold." This ...

A fisheye view of the deadliest breast cancer

...d, genetically engineered zebrafish as a potential front runner. ...

Nano-devices hold promise for early-stage cancer detection

...ation (CFI). "This research is opening up a new front in the battle against cancer and other diseases," said Jamal Deen, the lead applicant, professor of electrical and computer engineering and Canada Research Chair in Information Technology, McMaster University. "The technology zeros in on specific ma...

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