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Tag: "fluid" at biology news

UCSB scientists probe sea floor venting to gain understanding of early life on Earth

... inquiry in their studies of seafloor hydrothermal fluid discharge into the Earth's oceans, which has been ... emerge may come in bursts when earthquakes occur; fluid flow may therefore repeat episodically over hundreds of thousands of years as abyssal hills are upli...

Topical treatment shown to inhibit HIV and herpes simplex virus infection

...ctivity of PRO 2000 in cervicovaginal lavage (CVL) fluid collected before and one hour after administration of a single intravaginal dose of PRO 2000 gel or a matched placebo gel. CVL specimens were tested for their ability to prevent HIV and HSV infection of susceptible human cells in culture. Levels of i...

Current human embryonic stem cell lines contaminated UCSD/Salk team finds

...t Neu5Gc getsinto human cells by being engulfed in fluid droplets and then moved tothe cytoplasm of the cell by a "pump" called the lysosomal sialic acidtransporter.Varki noted that this pathway is an unusual and previously unknown onethat may also be relevant to the entry of other small molecules intocell...

The secret lives of whales

...sources did not interrupt their lives. Living in a fluid environment they could move to new areas of productivity and find food even as the climate around them changed.?/p> Palumbi compares the ability to read genes to counting the rings of a tree ?but looking at the history of an entire population, no...

Researchers discover molecule that causes secondary stroke

... the initial stroke. "Normally the cerebral spinal fluid that envelopes the brain carries off wastes and ex...ke survivors are at greater risk." Several spinal fluid components were suspected of causing the vasospasm, Dr. Clark explains. They included hemoglobin, bi...

International trial of two microbicides begins

...l acidity of the vagina in the presence of seminal fluid that neutralizes the vaginal environment. An acidic environment inactivates HIV as well as other pathogens. Each woman in the trial will be placed at random into one of four equally sized groups. One group will use BufferGel before each act of sexua...

MetaChip provides quick, efficient toxicity screening of potential drugs

...l acidity of the vagina in the presence of seminal fluid that neutralizes the vaginal environment. An acidic environment inactivates HIV as well as other pathogens. Each woman in the trial will be placed at random into one of four equally sized groups. One group will use BufferGel before each act of sexua...

Influenza vaccine uses insect cells to speed development

...ured, and the influenza virus is injected into the fluid surrounding the embryo. The egg is then resealed, the embryo becomes infected, and the resulting virus is then harvested, purified and used to produce the vaccine. In addition to the long development time, another drawback to this method is the possi...

Implanted Devices Detect High-Risk Heart Failure Patients

...ls (ACE inhibitors)or remove the excess buildup of fluid in the lungs (diuretics). Implantable devices are the latest options in preventing arrhythmias that can lead to sudden death, with CRT-Ds being the latest technology. CRT-Ds perform two main functions. First, the devices electrically stimulate both ...

Ophthalmologists Use Artificial Silicon Retina Microchip To Treat Vision Loss

...nt opening in the retina through which they inject fluid to lift up a portion of the retina from the back of the eye, creating a small pocket in the "subretinal space" just wide enough to accommodate the ASR. The surgeons then enlarge the pocket opening and insert the implant into the subretinal space. Fi...

Ophthalmologists implant five patients with artificial silicon retina microchip

...nt opening in the retina through which they inject fluid to lift up a portion of the retina from the back of the eye, creating a small pocket in the "subretinal space" just wide enough to accommodate the ASR. The surgeons then enlarge the pocket opening and insert the implant into the subretinal space. Fi...

Effective Cancer Treatments Follow The Clock

...tions like sleeping and waking, rest and activity, fluid balance, body temperature, cardiac output, oxygen consumption and endocrine gland secretion. In their experiments, the researchers measured the animals' body weight as an indicator of response to the anti-cancer drug. They discovered that Clock-muta...

Norovirus, AIDS vaccine and Hepatitis Virus

... is released into the bloodstream or intercellular fluid to induce healthy cells to manufacture an enzyme that counters the infection. One class of interferons (alpha) is used to treat chronic infection with HBV and HCV. There is a vaccine available to prevent the spread of HBV but not HCV. In the study, ...

Polymers with copper show promise for implanted sensors

...d they're working on a way to do the same thing in fluid under the surface of the skin. Much work remains to be done, "but the concept of using immobilized copper ions is what we're putting a lot of thought into these days," said Meyerhoff. "It's a speculative idea, but if it works, it will be very exciti...

Nanoscale Diagnostic Sets Sights on Alzheimer's

...lification (BCA) technology, researchers analyzing fluid from around the brain and spinal cord have detecte...d, the researchers were able to detect within each fluid sample a miniscule amount of proteins called amyloid ß-derived diffusible ligands (ADDLs). The goal ...

New Drugs For Bad Bugs: UF Approach Could Bolster Antibiotic Arsenal

...measure how much of a drug actually ends up in the fluid surrounding the bacteria at sites of infection and are among the first in the country to test the method in people. These concentrations can differ widely from those found in the bloodstream, said Derendorf, who has published results from studies tha...

Too much water may be as dangerous as too little during long-distance athletic events

... play a role in the rate of this loss. Calculating fluid loss is as simple as weighing yourself before and ...xercise and comparing that number to the amount of fluid you consumed throughout. "All serious distance athletes should find out what their rate of fluid l...

Bush, Cheney and Rumsfeld are now species of slime-mold beetles -- but strictly in homage

... play a role in the rate of this loss. Calculating fluid loss is as simple as weighing yourself before and ...xercise and comparing that number to the amount of fluid you consumed throughout. "All serious distance athletes should find out what their rate of fluid l...

New design : complete

... play a role in the rate of this loss. Calculating fluid loss is as simple as weighing yourself before and ...xercise and comparing that number to the amount of fluid you consumed throughout. "All serious distance athletes should find out what their rate of fluid l...

Hydrogen and methane provide raw energy for life at 'Lost City'

...black smokers because some emit hot, mineral-laden fluid that looks like dark, billowing smoke when it hits the icy cold seawater. Carbonate minerals from fluids at Lost City drape nearby cliffs in brilliant white and form vents ranging in shape from tiny toadstools to the 18-story column, named Poseidon,...

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