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Tag: "hide" at biology news

Study shows lizard moms dress their children for success

...eir behavior. Sneaky yellow-throated males like to hide in the grass and need a barred pattern that breaks...erable to predators--wearing stripes and trying to hide in the grass, for example. Lancaster identified two pathways by which an extra dose of estradiol fro...

A first -- Hebrew University scientist observes brain cell development in 'real time'

... brain which are capable of neurogenesis, and they hide secrets we want to reveal."...

Resistant HIV quickly hides in infants' cells

...ablish itself in infants?CD4+ T cells where it can hide for years, likely limiting their options for future treatment. The study is published in the May 15 issue of The Journal of Infectious Diseases, now available online. Mother-to-child transmission of HIV is an important factor in the AIDS pandemic, a...

'Insulator' helps silence genes in dormant herpes virus

...insulator. Knowing what genes the virus uses to hide and re-emerge could give pharmaceutical companies targets for designing drugs that disrupt those mechanisms. The studies also have implications for treating and manipulating other types of viruses, Zhou says. "This study provides one of first exam...

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

...The adolescents, though, tended to scurry away and hide when faced with threat. While sharing prey is an advantage for other arachnids with social tendencies, Rayor said she has yet to witness amblypygids intentionally sharing prey. More than 100 amblypygid species live in tropical areas worldwide. Thes...

Can engineered immune cells stop AIDS?

...ssesses an unusual structure and a keen ability to hide from antibodies in a sugar-coated shield. The shield has very few open spaces on its surface, Wang says, which makes it virtually impossible to penetrate. And because the virus also has an uncanny ability to hide, HIV often goes virtually unnoticed b...

Magnetic system could be key to surgery without scars

...we do the surgery through only one hole and can we hide the hole in a cosmetically advantageous or less painful location,?Dr. Cadeddu said. Study researchers concluded that “the ability to reduce the number of trocars (holes) necessary for laparoscopic surgery has the potential to revolutionize surgica...

Twenty Years of Malaria Research: Outcomes and Perspectives

...and his colleague Rose McGready had been forced to hide in the jungle. Now, Professor Nosten is assisted in his work by Thai nationals from the region, including a number of local Karen and Burmese who received training by the SMRU team. In addition to studying malaria drug treatments for pregnant women...

Researchers map spread of pathogens in the human body

...cells. By understanding where bacterial pathogens hide in the body and how they spread through the body's tissues, doctors will be able to decide the most effective antibiotics or vaccines to treat and prevent various types of infection. Dr. Mastroeni said, "The fight against bacterial infections is...

Scientists find a key to immune system's ability to remember

... pathogens like measles virus and HIV, agents that hide inside cells. Lck is important in helping "naive" T cells -- those cells that have never been exposed to a particular pathogen -- capture the receptor template of the invading agent and store it for future reference. Among the millions of naïve T ...

Plants tell caterpillars when it's safe to forage

...fects of light. If larvae are diurnal, they should hide in "shelters" fashioned out of filter paper attached to the plastic cups they were kept in. When larvae were fed an artificial diet, however, different light conditions produced no changes in their hiding behavior. But introducing plants changed la...

Tumor wizardry wards off attacks from the immune system

...ine in St. Louis have found that pancreatic tumors hide from the body's immune surveillance by surrounding themselves with cells that make it hard for the immune system to detect them. The tumor-protecting cells are white blood cells called regulatory T cells, or T-reg for short. Under ordinary circumsta...

Pollution threatens coral health by preventing lesions from healing, UCF study shows

...walls do. "We're losing places where animals can hide and fish can feed," Fauth said. "And reefs where people dive are being degraded." Tissue samples from mustard hill coral were taken from eight Broward County sites, including near-shore and offshore locations at each of four sites: a City of Hollyw...

Tetracycline plus teeth equal gray smile

...their mouth to avoid smiling in public in order to hide their teeth darkened by tetracycline stains. Typic...e only treatment options to help these individuals hide such stains and boost their self-esteem. However, Kim L. Capehart, DDS, MBA, AGD member and clini...

Thin tough skin, slow-growing gills protect larval Antarctic fish

... when they hatched, seeking perhaps a safe area to hide from predators, Cziko said. The average freezing point of the larval fish fluids was about -1.3 degrees Celsius, according to testing with a nanoliter osmometer. Yet the fish hatch into water at almost -2 degrees Celsius. "With all this ice around,...

Common bacteria pirate natural mechanism to get inside cells

...li uses this mechanism to get inside the cells and hide from the antibiotic effect and the immune system," says Dr. Daaka. "We think their hiding is mediated through dynamin. This is not only applicable to this particular pathogen but for many more." Dr. Daaka, who studies receptor signaling, likens rec...

Ancient DNA helps UF researchers unearth potential hemophilia therapy

...their success, Fletcher said. Researchers usually hide corrective genes inside viruses, which then infect cells. Without the virus to act as a key, the gene would be unable to enter the cell. But viral gene therapy has been associated with medical complications, and a few human patients have died as a re...

One bacteria stops another on contact

...on University has indicated that E. coli cells may hide in the walls of the bladder and urinary tract in a dormant state, explained Low. It is possible that the newly discovered CDI system contributes to this process. "By studying the CDI system, we hope to understand more about how bacteria interact wit...

Gene discovery sheds light on causes of rare disease, cancer

...s cellular transport machinery to invade cells and hide from the body's immune system. They believe that other infectious organisms may use the same mechanism. The Listeria bacterium, found in soil and water, can be transmitted to humans via undercooked and unpasteurized food, causing flu-like symptom...

Hide and seek: Researchers discover a new way for infectious bacteria to enter cells

...s cellular transport machinery to invade cells and hide from the body's immune system. They believe that other infectious organisms may use the same mechanism. The Listeria bacterium, found in soil and water, can be transmitted to humans via undercooked and unpasteurized food, causing flu-like symptom...

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