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Tag: "appearance" at biology news

'Sticky' mice lead to discovery of new cause of neurodegenerative disease

...led sticky (sti). Although named for the sticky appearance of their fur, the mice harbor much more serious problems beneath their unkempt coats: poor muscle control, or ataxia, due to death of Purkinje cells in a region of the brain called the cerebellum. No one knew why Purkinje cells were dying in stic...

New study reveals components of cocoa may enhance the appearance of the skin

... components in cocoa may actually help improve the appearance of women's skin ?increasing hydration, decreasing skin roughness and scaling, and helping to support the skin's defense against UV damage. The German scientists attributed the observed benefits to cocoa flavanols ?a group of compounds that can be par...

Despite acidity, orange juice could still be a source of foodborne disease

...umption of unpasteurized orange juice. The sudden appearance of unpasteurized orange juice as a vehicle for Salmonella could be due to a variety of reasons including a greater amount of orange juice consumed and more importation of orange products from countries that might not have sanitary guidelines or regul...

Ancient global warming drove early primates' dispersal

...ng with unprecedented precision the times of first appearance of Teilhardina in Asia, Europe, and North America. To achieve such precision, they used a carbon isotope curve recently documented on all three continents. Carbon in the atmosphere, earth and living organisms differs in the proportion of carbon-12 an...

Everything in its place: Researchers identify brain cells used to categorize images

...a were more sensitive to differences in the visual appearance among the set of motion patterns and did not encode their category membership. Category representations in the parietal cortex also changed dramatically with learning and experience. Over the course of several weeks, the monkeys were retrained to gr...

UF scientists discover evolutionary origin of fins, limbs

...ifferent place - the midline of the animal." The appearance of paired fins on the sides of early vertebrates was a major evolutionary innovation toward fin - and eventually limb - locomotion, Cohn said. The earliest fishes lacked paired fins, similar to the modern-day lamprey - a species of jawless fish with ...

Spray-on skin relieves emotional trauma for child burn victims

...shown most children reported an improvement in the appearance of their scars and were happier when they used the product, called Microskin. The new liquid spray-on skin technology, which binds to the topmost layer of skin, is a world first Australian invention. It is waterproof and sweat-resistant, with one a...

Science finds new fix for UV-damaged skin in arthritis treatment

...B derivative, significantly reduced the amount and appearance of hyperpigmentation, age spots and uneven melanin...the newest and most studied. "Pigmentation is an appearance issue that strikes an emotional chord for women, and even though we're constantly telling our patien...

Stem cells can repair torn tendons or ligaments

...able to repair the tendon. The cells changed their appearance to look more like tendon cells (tenocytes), and significantly increased production of collagen, a protein critical for creating strong yet flexible tendons and ligaments. Tendon tissue repair was detected using a special type of imaging known as pr...

Research tracks whales by listening to sounds

...They will analyze possible connections between the appearance of the whales and ocean conditions. "We'll look at water temperature, salinity and even chlorophyll growth," Mellinger said. "Ultimately, what we hope is to be able to identify a certain water mass and know that it will lead to chlorophyll growth and...

Bone and cartilage growth to blame for heart valve disease

...sed valves had were hardened with a glassy whitish appearance ?totally different than healthy tissue, which indicated to me that the actual structure of the valves had changed," she says. Dr. Rajamannan has been awarded over $750,000 in grants from the NIH and the American Heart Association to pursue this resea...

Exotic crab poised for widespread UK invasion

...itoring programme for the mitten crab, even if its appearance is just a rare occurrence in an estuary. Records demonstrate the crab's ability to rapidly expand once the local population reaches a critical density and or conditions become favourable. "With most invasive species, such as the grey squirrel, the ...

Soil-bound prions that cause CWD remain infectious

... exposed CGD mice to the bacterium, recreating the appearance of the patient's infection. Researchers were then able to retrieve the bacteria from the mice's spleens, which are disease-fighting organs. These factors all support the pathogenic nature of the bacterium. Because the bacterium does not cause d...

Scientists discover a new disease-causing bacterium in an immune-compromised patient

... exposed CGD mice to the bacterium, recreating the appearance of the patient's infection. Researchers were then able to retrieve the bacteria from the mice's spleens, which are disease-fighting organs. These factors all support the pathogenic nature of the bacterium. Because the bacterium does not cause d...

Cuttlefish masters of disguise despite colorblindness

... that while these masters of disguise change their appearance based on visual cues, they do so while being compl...tat is richly varied. Cephalopods can change their appearance with a speed and diversity unparalleled in the animal kingdom. Some squids, octopuses, and cuttlefis...

Attractive birds more immune against bird flu

... to explain why individuals of a species differ in appearance and why the choice of a mate is influenced by behaviour and appearance features that cannot reasonably be thought to have any usefulness. Therefore, they have begun to loo...

Malaria parasites develop in lymph nodes

...ph-node parasites probably don't contribute to the appearance of malaria symptoms, he added. But even partially developed or destroyed parasites could significantly affect how the immune system responds to infection, he noted. Another unexpected finding adds even more complexity to the mammalian immune respo...

Male rivalry increases when females at most fertile, say researchers

...e found that women's preferences for male physical appearance vary according to their fertility status. During ovulation women tend to find masculine looking men more attractive and prefer their voices and odour. During this fertile phase women are more likely to have an affair with a masculine-looking man, a...

Invasive species harms native hardwoods by killing soil fungus

...inson says. "By killing off native soil fungi, the appearance of this weed in an intact forest could stifle the next generation of dominant canopy trees. It could also invite other native and nonnative weedy plants that currently grow in low-AMF habitats, such as those disturbed by logging or development." The...

UF scientists reveal ancient origin of vertebrate skeleton

...ed a nuisance, largely because of their unsettling appearance and demeanor - picture a leech longer than your forearm with a rasp-like mouth that flares open at the end of its body. Still, the lamprey and its cousin, the hagfish, offer insight into the early Cambrian period 540 million years ago, when multicel...

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