Tag: "when" at biology news
Geologist Finds Hidden Patterns Of Diversification In Ordovician Radiation
... including information about where they werefound, when
they first appeared in the fossil record and the typeof environment in which they were found. When he compared rates of diversification at the local levelwith reported global diversification rates, he found significantdifferences in the patterns. "Th...
Insects Provide Clues About Bodies Underwater
...hologists are "basically taking an educated guess" when
they estimatetime of death in such cases. Macdonell examined 200 cases of freshwater deaths in B.C. in 1995/96, andnow wants to see if what happens to the pigs is what happens to humans. "I'm trying to find out whether we can use some of these invert...
Oral Vaccine Protects Infants From Severe Rotavirus Diarrhea
...on indirect costs annually, rising to $1.4 billion when
indirect costs, including lost work timefor parent...heEuropean Union in an effort to determine how and when
the vaccine might also bemade available in the developing world. ***Study Details*** The Venezuelan ...
New Mathematical Model Could Help Predict Health Of Offshore Areas Where Rivers Enter The Sea
... is often and easily brokenby physicalforces, and when
this break occurs, the front can stretch at greatl...is front andits influecne on biological production when
certain conditions are included inthe mathematicalformulas. Complications abound. For instance,...
Purdue Research Shows Omega-3S Benefit Bone
... showed improved formation rates and were stronger when
compared to bones of animals in a control group. Watkins did studies with both rats and chickens. Bones grow in response to the actions of muscles, Watkins says. When you use your muscles, they send chemical signals to your bones that tell the bones ...
New Form Of Gene Therapy Holds Promise For The Future
...ug" that is internally regulatedand activated only when
needed. They have developed a system in mi... and greatly amplified theproduction of luciferase when
the proper signals (in this case, an inflammatoryreaction) were received. The luciferase gen...
Overfeeding Normal Infant Rats Affects Three Generations: Permanently Changes Basic Metabolism, Interferes With Reproduction
...ister rats randomly assignedto one of three groups when
they were 5 days old. One group was fed by mother...nand they were 12 percent larger than the controls when
they were bred to normalmales at 4 months of age. Many of the overfed first generation had d...
Triglyceride Blood Levels Predict Heart Attack
...eart attack risk. Triglyceride levels are elevated when
enzymes responsible for breaking down fatsin the bloodstream are less active. Their decreased activity results in higherVLDL and lower HDL levels, both of which are strongly associated withcardiovascular disease and heart attacks. Decreased activity...
Presence Of Protein Extends Life; Potential Aging Mechanism Found
...ent but effective levels of hsp70 could be present when
stress isroutinely encountered, the researchers said. Hsp70 may repair and restorehigher-order cell functions, which themselves would otherwise quicken themechanism responsible for aging. However, people shouldn't think they will live longer by taki...
Purdue Researchers Track Oil Spill's Effects On Sea Otters
...lood suggests they may be exposed by ingesting oil when
they groom their fur, or they may be eating contam...." Rebar became involved with the project in 1989, when
project scientists found abnormalities in the sea otters' blood. Snyder joined the team in 1995. "Th...
Stress Lowers Sperm Count By Overwhelming Cells That Make Testosterone
...ig cells retain their glucocorticoid receptors,but when
the hormone enters adult cells it interferes with ...eory now is that this more powerful enzyme emerges when
the Leydig cellsmature. It may be encoded by a gene closely related to the 11ßHSD gene expresse...
Herpes Virus Strain Identified As A Trigger In Multiple Sclerosis
...may be a point intime during the progression of MS when
the virus, which lies dormant in the bodyfor years, reactivates, accounting for its presence in a subset of MS patients.The study appears in the December 1997 issue of Nature Medicine(1). "We expect that currently available antiviral treatments--for...
Recombinant Protein Immunizes Mice, Promises New Strategy Against Infection And Cancer
...onse without causing full-blown disease. However, when
vaccines containingsoluble proteins from the microorganisms are used to produce an immune response,the CTLs are rarely activated. For decades, vaccine development experts have sought to find a simpleand practical way to activate the killer ...
DNA Helps Track Origins Of Growing Blight Problem
...ngly costlyagricultural disease in B.C. since 1993 when
the province experienced anunusually wet summer. The potato industry alone is worth $40 million a yearto the provincial economy. The blight affecting B.C. stems from the same fungaldisease which was a major factor in the Irish po...
UF Researcher Designs Pill To Control Mosquitoes
...st on the chlorella. Famine follows. Borovsky said when
he first pulled out mosquito ovaries, homogenized them and inserted them back into mosquitoes, he found that the mosquitoes produced no more eggs. "So at first we thought we had a birth control pill," Borovsky said. "But then we found that the reason...
Eating Lake Ontario Fish Linked To Shorter Menstrual Cycles; Consumption May Delay Pregnancy
... frequency of sport-fish consumption was collected when
participants enrolled in the cohort in 1991. ...sh for at least seven years, dating back to a time when
lake contamination was higher than in recent years. Researchers found a small conception delay for...
Researcher Finds New Way Of Devising Medically Useful Linked Rings Of Atoms Replacing Toxic, Expensive, And Environmentally Unfriendly Old Process
...It is just as efficient as the old initiator, even when
the team use ten times less. The new chemical is also a catalyst which means that it is not destroyed in the stitching process. The catalyst can be easily recovered from the reaction and it can be re-used again in other reactions. Consequently, a...
Premies' Lung Disorder Can Cause Developmental Delays
...to find out whether these motor problems persisted when
they went to school, whether they resolved, and wh...sabilities that you see in groups of premie babies when
they're at school age, " said Singer. Other researchers on the study include Toyoko Yamashita, Lawr...
UF Researchers Investigate Phenomenon Of Seizure-Alert Dogs
... peoples. "If you are able to alert people to when
seizures are going to occur, you have more control in the workplace," Encizo said. "Lots of times, there's that stigma, 'I can't hire this person, because what if they have a seizure?' But if they have a dog that can alert them, that would put that f...
Skull Of Refrigerator-Size Ancient Armadillo Finds A Home At UF
...liff face in the Haile quarries. Six months later, when
the two men returned, a rock slide had exposed more bones, including the skull. "We were just elated," said Taylor, who also is secretary of the Florida Paleontological Society. "I probably will never see anything like it the rest of the time...
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