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Tag: "various" at biology news

Mars mission Risk 29: Scientists research ways to reduce radiation-induced brain damage

...culate how much damage is caused by particles with various energy levels. "There are only a handful of lab...physical and behavioral changes in rats exposed to various levels of the type of radiation that Mars astronauts will encounter in space. They will also conduct...

Three-dimensional, miniature endoscope opens new diagnostic possibilities

...flected back is recorded, and the intensity of the various colors decoded by a spectrometer, which analyzes the wavelengths of light. Another device called an interferometer, which calculates structural information based on the interaction between two waves of light, provides the data required to create thre...

Too mellow for our predatory world

...ted to find out to what extent marine iguanas from various populations and with different predator-experience...nutes. There were significant differences in the various island populations examined by the scientists: marine iguanas with no experience of predator-pressur...

Highly concentrated botulinum preparation for cosmetic injections can result in severe illness

..., of the CDC, Atlanta, and colleagues investigated various aspects of the four suspected cases of botulism. They found that clinical characteristics of the four case-patients were consistent with those of naturally occurring botulism. All case-patients had been injected with a highly concentrated, unlicensed...

Critical hearing gene helps send auditory messages to brain

...nctional otoferlin gene. When exposed to sounds of various frequencies, the mice showed no detectable activity in parts of the brain that normally process sound. They further found that the profoundly deaf mice suffered a complete loss of neurotransmitter release from their inner hair cells, despite having...

Walking not enough for significant exercise benefits

... response to a two-hour glucose tolerance test and various blood lipids were unaffected by either exercise program. "Our concern is that people might think what matters most is the total number of daily steps accumulated, and not pay much attention to the pace or effort invested in taking those steps," Dr. ...

Gene chip technology shows potential for identifying life-threatening blood infection

... breast cancer and predict a patient's response to various chemotherapy drugs, but this is the first time researchers have attempted to use gene chips to distinguish sepsis from non-infectious inflammation. Early symptoms of sepsis and non-infectious systemic inflammation are subtle and similar - fever an...

Coral reefs are increasingly vulnerable to angry oceans

... in different parts of the reef, incorporating the various shapes of coral colonies, and then calculated whether or not they will be dislodged during extreme weather. The study introduces a new concept, "colony shape factor," to translate the myriad shapes and sizes of coral colonies onto a simple scale t...

Spike in testicular cancer is focus

... the team will collect and evaluate information on various major suspected risk factors, such as past medical history, history of hernia, venereal diseases, and any medication with androgens and other hormones. They will also examine lifetime occupational history, tobacco smoking, alcohol consumption and die...

Researchers map spread of pathogens in the human body

...ctive antibiotics or vaccines to treat and prevent various types of infection. Dr. Mastroeni said, "The fight against bacterial infections is analogous to fighting a battle, if you know where your enemy is and how it moves around, you can make calculated, strategic strikes." Currently, the debate ove...

Intrinsic eye protein halts angiogenesis

...ti. Previously, scientists had experimented with various ways to clear blood vessel growth in corneal tissue ?a condition that often occurs due to herpetic infections of the eye, chemical burns, traumatic injury or surgery such as corneal transplantation. "The standard paradigm has been the cornea is ava...

Insulin receptor stops progression of Alzheimer's disease

...agonists ?alpha, gamma and delta. All are found in various tissues and organs in the body, including the brain, and PPAR gamma is already FDA approved as a treatment for Type 2 diabetes, or adult-onset diabetes. The two other classes of PPAR agonists have not yet been approved for clinical use. Following tr...

High hourly air pollution levels more than double stroke risk

...d photochemical oxidants, were monitored hourly at various sites in each of the 13 areas. When the two sets of data were put together, a pattern emerged for intracerebral haemorrhage - where a blood vessel bursts inside the brain - for the warmer months between April and September. This showed that high ho...

Age-related changes in DNA repair illuminate the connection between age and genetic damage

...l metabolism and environmental influences--and the various ways in which cells repair that damage. In the new work, researchers found that cells in young fruit flies make use of a different mix of molecular DNA-repair mechanisms compared to cells in older flies. The findings are reported by William Engels an...

Handling HPV vaccines and screening: The views of 100 authors

...a group of 100 independent experts, leaders in the various relevant fields". This monograph was officially launched during the 23rd International Papillomavirus Conference & Clinical Workshop in Prague, Czech Republic at the beginning of September 2006. The full version is available at the Vaccine websi...

Contrary to common wisdom, scientist discovers some mammals can smell objects under water

... through the bottom of a glass tank. Then he stuck various objects on the bottom of the tank ?pieces of earthworm, small fish, insect cuticle and blobs of wax and silicon ?and observed the moles' behavior. He saw that, when the moles approached one of these targets, they would blow bubbles that came into con...

Mayo Clinic study suggests that a central nervous system viral infection can lead to memory deficits

...culty learning to navigate a maze designed to test various components of spatial memory. The degree of memory impairment, which ranged from no discernable damage to complete devastation, was directly correlated to the number of dead brain cells in the hippocampus region of the mouse's brain. Picornaviruse...

Cloning techniques produce FDA-approved antibiotic

... Food and Drug Administration for the treatment of various bacterial infections, and has proven effective for... in a non-native host. Fosfomycin is produced by various species of bacteria, but generally in low yields. Using a cloning method developed by Illinois micro...

St. Jude finds clues to hearing loss from chemotherapy

...s of hearing loss. "Now that we've identified the various problems in the ear that can contribute to hearing loss in these models, we can work back and look for specific mutations in these animals," Zuo said. "That will let us link specific mutations to specific disruptions in the ear that cause hearing los...

Ecstasy can harm the brains of first-time users

...and blood flow in different areas of the brain and various psychological tests. After 18 months, 59 first-time ecstasy users who had taken six tablets on average and 56 non-users were re-examined with the same techniques and tests. The study found that low doses of ecstasy did not severely damage the ser...

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