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Tag: "before" at biology news

100 percent of pregnant women have at least one kind of pesticide in their placenta

...spital. Mothers were informed of the study’s goals before giving their express consent. Thanks to gynaecologists, the nurses and the midwives who participated in the study, biological samples were extracted from the blood, the umbilical cord and the placenta during childbirth. The following day, an epide...

Dinosaur hearing, listening to muscle noise, quieter cubicles

...courage you to visit ASA's "World Wide Press Room" before and during the meeting. By the week of May 28, the site ( http://www.acoustics.org/press ) will be updated for the Salt Lake City meeting and will include numerous lay-language versions of selected meeting papers. These papers will enable you to cov...

Spud origin controversy solved

...ean potato was selected from Chilean introductions before the 1840s because they were better able to reprodu...ecimens of cultivated potatoes collected in Europe before 1845. “The results of these studies are providing data to rewrite the history of the cultivated ...

Chemical maps hint at drug's effects on schizophrenia

...in blood drawn from 50 patients with schizophrenia before and after treatment with the atypical antipsychotic drugs olanzapine, risperidone or aripiprazole. Lipomics specializes in diagnostic discovery with an emphasis on lipid metabolism. Atypical antipsychotics, a newer group of prescription medications u...

Spreading viruses as we breathe

...ying in the air. "A droplet can travel for 10cm before it dries in the air, it doesn't immediately fall to the ground." She said the study, funded by the Australian Research Council, was motivated by an outbreak of SARS in Hong Kong where more than 300 people were infected within the space of a few ho...

Research says boiling broccoli ruins its anti-cancer properties

...ntive substances known as isothiocyanates. However before this research it was not known how the glucosinolates and isothiocyanates were influenced by storage and cooking of Brassica vegetables. The researchers, Prof Paul Thornalley from Warwick Medical School at the University of Warwick and Dr Lijiang ...

Herpes infection may be symbiotic, help beat back some bacteria

... never recur; sometimes they flare up periodically before becoming quiescent again. In addition, less infamous herpes viruses like HHV6 and HHV7 permanently infect most humans without ever producing any significant symptoms. The results have potentially wide-reaching implications for immune research. Hum...

The quest for an effective HIV vaccine presents new possibilities, challenges

...idual" Might people immunized with T-cell vaccines before HIV exposure remain disease-free for a prolonged p... their sexual partners. A preventive vaccine given before exposure to HIV might stifle the initial burst of virus, better control virus levels and potentially...

Left-right wiring determined by neural communication in the embryonic worm

...ight: Since, like handedness, AWC asymmetry arises before the animal is fully developed, maybe they needed to examine the nervous system of the embryonic worm. Using an electron microscope, they discovered that the developing worm's neural network, which had not previously been mapped, was completely differ...

Study of protein folds offers insight into metabolic evolution

...lution of genes and organisms but which have never before been used to work out the evolutionary history of protein architecture across biological networks. "We are interested in how structure evolves, not how organisms evolve," said professor of crop sciences Gustavo Caetano-Anollés, principal researche...

Cornell lab confirms deadly fish virus spreading to new species

...d require them to drain their boats and live wells before leaving Wisconsin’s Great Lakes waters, the Mississippi River and those tributaries up to the first impassable dams, according to the Associated Press. The spread of the virus could have a devastating impact on aquaculture and particularly the chan...

Executable biology -- Computer science sheds light on animal development

...es that would fill in the missing pieces in silico before performing actual lab experiments. By running their model with a wide variety of gene mutation scenarios and comparing results with available laboratory data, they found that the fate of C. elegans vulval precursor cells depends upon the time-sequ...

Danish researches solve virus puzzle

...rs a pseudoknot it needs to unravel the pseudoknot before it can proceed. Question is, how does it do that? ...encounters a pseudoknot it has to unravel the knot before the reading can proceed. During this process the ribosome sometimes slips backwards and, like the le...

Natural antibiotics yield secrets to atom-level imaging technique

... their properties to design super-smart bombs, but before we can do that, we need to understand how these AMP smart bombs interact with membranes to destroy bacteria. We need to know how they're shaped before, during and after the process of attaching to bacteria and how they attach." Solid-state NMR spe...

Cloning the smell of the seaside

...he genes responsible for its production have never before been identified. The new findings will be published in the journal Science on Friday February 2. "By isolating a single gene from a bacterium collected from the mud of Stiffkey marshes, we deduced that the mechanisms involved in DMS production dif...

Rapid response was crucial to containing the 1918 flu pandemic

...emic would be to vaccinate large numbers of people before they were exposed to an influenza virus strain that is easily transmitted from person to person. Developing such a vaccine in advance, however, is difficult because an influenza virus mutates as it replicates, and over time these mutations can alter ...

Risk of HIV transmission highest early in infection

... were themselves in the early stages of infection, before the virus had had time to mutate much. Therefore, early infection—also known as primary infection—which represented “less than 10 percent of the total samples, disproportionately accounted for about half of subsequent transmission events.? A high ...

Sandia researchers take new approach to studying how cells respond to pathogens

...d lead to better ways to diagnose and stop disease before there are symptoms and development of more effective therapeutics. Most existing research into how immune cells respond has been done by looking at large cell populations. The Sandia researchers say information gathered from a large population of ...

Out-of-body experiences may be caused by arousal system disturbances in brain

...uring sleep transition, patients were asked, "Just before falling asleep or just after awakening, have you h...tory hallucinations immediately after waking up or before falling asleep due to an ill-timed disconnection between the brain and the body. Although it was onc...

Transfusion expert urges wider use of filtered blood

Filtering white cells from donor blood before a transfusion is much safer for patients and long ... same time. This is as basic as washing your hands before conducting a physical examination of a patient," Blumberg said. "But despite much scientific evidenc...

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