front 2 2

Tag: "front" at biology news

UCSD researchers discover internal compass of immune cell

...tivates A3 adenosine receptors concentrated at the front of cells, providing the signal to move toward the source of chemoattractants. Lead authors Yu Chen, M.D., UCSD postgraduate researcher in surgery and Ross Corriden, UCSD graduate student in biomedical sciences, found that when ATP receptors were b...

High levels of blindness in southern Sudan following years of war

...inward (‘‘trichiasis’?. The cornea—the transparent front part of the eye—becomes damaged by the eyelashes and develops ulcers, and eventually blindness results. The situation revealed by the researchers is particularly tragic as improved living conditions, better hygiene, and early treatment of the inf...

West Australian fossil find rewrites land mammal evolution

... top of the head but importantly also had muscular front fins with a well-formed humerus, ulna and radius the same bones are found in the human arm. "This new fossil proves that features of land-living tetrapods (four-legged vertebrates) evolved much earlier in their evolutionary history than previously...

UNC scientists solve mystery of how largest cellular motor protein powers movement

...engines make cars move. “You have an engine up front that burns gas, but we didn’t know how the wheels are made to move.? Dr. Timothy Elston, associate professor of pharmacology and director of the School of Medicine’s bioinformatics and computational biology program, explains further. “One of the un...

Ohio University researchers discover evolutionary oddity in flamingos

... tongue acts like a piston, sucking water into the front of the bill and then pushing it out the sides. Fringed plates on the tongue trap algae and crustaceans in the circulating water. "The flamingos' feeding habits have captured people's curiosity for ages, but that wasn't the original focus of our ...

Pollutant haze heats the Arctic

...contributing factor." "The Arctic represents the front line of climate change and is projected to warm at a rate at least double that of the Earth as a whole," says University of Utah meteorology Chair Jim Steenburgh, who wasn't involved in the study. "Although the importance of greenhouse gas emissions ...

The higher the hierarchy, the greater the aggression

...he rates of aggression would be highest toward the front of the queue and that the aggression would increase as the time available to inherit the ability to breed ran out in seasonal animals. These predictions were tested on field colonies of the paper wasp Polistes dominulus by recording aggression betwee...

Biological motors sort molecules one by one on a chip

...by using this electrical force they could push the front of the microtubule into the determined direction. To demonstrate this, the researchers allowed a mixture of green and red fluorescent microtubules to arrive at a Y-junction. By changing the direction of the electrical force, depending on the color ...

Scientists discover why cornea is transparent and free of blood vessels, allowing vision

...e), is the thin transparent tissue that covers the front of the eye. It is the clarity of the cornea that allows light to pass onto the retina and from there to the brain for interpretation. When the cornea is clouded by injury, infection or abnormal blood vessel growth, vision is severely impaired, if not...

Role of protein in immune response may aid HIV research

...-causing bacteria. These proteins appear to be the front line in defending the body from infection, mounting a defense long before the body's main immune system responds. The IU School of Medicine ?Northwest scientists report that various organs mount different defensive responses with PGLYRP when expose...

New 'implanted contacts' designed to fix nearsightedness

...ly placing the specially fitted artificial lens in front of the eye's natural lens, rather than replacing the natural lens as other implanted lens do, said Dr. Bowman, professor of ophthalmology. The lens, made of a special collamer material, corrects moderate to severe nearsightedness, known as myopia, b...

Can dogs smell cancer?

...ancer patient by sitting or lying down directly in front of a test station containing a cancer patient sample, while ignoring control samples. Standard, humane methods of dog training employing food rewards and a clicker, as well as assessment of the dog's behavior by observers blinded to the identity of ...

Relationship of brain and skull more than just packaging

...suture that runs down the center of the skull from front to back ?and unilateral coronal craniosynostosis, early closure of one side of the suture that runs across the top of the head from ear to ear. Children with craniosynostosis almost universally have surgery to reopen the sutures and allow normal g...

Major WHO study concludes calcium supplements can reduce complications during pregnancy

...th features that resemble a fat cat face. From the front or the back, the identical halves of the enzyme have an ear and cheek protrusion on each side. (See illustration.) Frayed whiskers even appear to sprout from the bottom. The similarity to a face ends at the top of the molecule, where two flaps open t...

Computer simulation hints at new HIV drug target

...th features that resemble a fat cat face. From the front or the back, the identical halves of the enzyme have an ear and cheek protrusion on each side. (See illustration.) Frayed whiskers even appear to sprout from the bottom. The similarity to a face ends at the top of the molecule, where two flaps open t...

UC Riverside psychologist explores human perception, finds 'wow factor'

...re asked to identify which shape was positioned in front of the loudspeakers. "Our results show that listeners can identify the shape of sound-occluding objects at better than chance levels, with some listeners displaying near-perfect performance," Rosenblum said. That research, he said, seeks a better u...

Mice lacking social memory molecule take bullying in stride

...ircuit, the nucleus accumbens, located deep in the front part of the brain ?309 genes increased in expression while 17 decreased. This pattern persisted even 4 weeks later, with 127 genes still increased and 9 decreased, paralleling the changes seen in social behavior. The researchers suggest that this alt...

Penguins waddle but they don't fall down, UH researchers say

...e is one in particular that always wants to cut in front of the other penguins, so that he can walk across the mat first. It's pretty cute." Just why penguins (or pandas or kittens) seem so "cute" to humans isn't as measurable as their gait, but some researchers speculate that this may be rooted in the a...

U-M scientists identify major psoriasis susceptibility gene

... genetic variation in the MHC, because it's on the front lines of dealing with pathogens and cancer," Elder explains. "It's an area where it's good to be different. If everybody were the same, we'd be like hybrid corn. A plague could come along and wipe us all out." Scientists have been searching for gene...

Cholesterol gets 'thumbs up' for role in digit development

...og developed only a single digit â? a thumb on the front paw (or a "big toe"on the back paw). The Sonic hedgehog protein is produced by a specialized group of cells located at the posterior part of the developing limb bud, which eventually develops into the pinkie finger or toe. At the site of its synthe...

1 2 3 4 5