Tag: "rejected" at biology news
October Geology and GSA Today highlights
...r some time these brines would have been laterally rejected
toward the fractures. As solidification progressed downward, brine concentration must have increased in the resulting shrinking ocean. These brines would have also escaped to the surface via the fracture network. High-pressure crystallization of salt...
How a gene tells plant to reject its own pollen
...nsplants in animals. A transplanted organ will be rejected
if its genetic makeup is different from that of the host but is more likely to be accepted if the genetic makeup is similar. In the case of self-incompatible plants, genetic relatedness between pollen and stigma results in rejection of pollen, and g...
Advances in engineering heart tissue reported by MIT scientists, colleagues
... cells that have been modified so they will not be rejected
by arecipient. Dr. Freed noted that at least one other group, in Germany, is alsoworking on cardiac tissue engineering. The first successful experiment five years ago "showed that cardiactissue engineering was possible," Dr. Vunjak-Novakovic ...
Environmental Health Institute report concludes evidence is 'weak' that electric and magnetic fields cause cancer
...olis, Minn., last June to advise NIEHS. The panel rejected
EMF as a"known" or proven, or even "probable" carcinogen but a majority of the panelsaid a role in cancer could not be ruled out and so it should be regarded as "possible" carcinogen. The NIEHS report today also recommends that the fieldscontinue to...
CU Research Team Unravels Mystery Of Larceny Among Tropical Ant Species
...ne sitefurthest from the home nest, the guard ants rejected
only eight of the 21interlopers. Breed speculated that vigilance by guard species had fallen off eitherbecause food was not a limiting factor or because other threats to the colonywere of greater importance. "If research is to be educational, studen...
Master Switch May Help Cancer Cells Hide From Immune System
... the immune system and therefore less likely to be rejected
by the body. "It is very important to establish how human cancer evades being eliminated by the immune system," said Yang Liu, Kurtz Chair Professor of Pathology at Ohio State University's Comprehensive Cancer Center. "If we know how a tumor evades t...
Artificial Heart Chamber And Artificial Blood Vessels Aid Cardiovascular
... The devices,which are biocompatible and thus not rejected
by the body, could improve andextend the lives of the millions of Americans who have diseased hearts, saidJames Runt, Ph.D., a faculty member in the University's Materials Science andEngineering Department. He described his work here today at a nati...
Transplanted Skeletal Muscle Mimics Heart Muscle; Helps Failing Heart Pump, Duke
...tient is that it'stheir own tissue, which won't be rejected
by the immune system. The Duke research team is testing the idea using rabbits, which havehearts very similar to a human heart. "Unlike some animals, rabbits have heartattacks just like people," Taylor said. The researchers injected t...
University Of Pittsburgh Reports Novel Ways To Improve Transplant Acceptance At
Transplantation Society Meeting
...ene for CTLA4-Ig were less likely themselves to be rejected
by a host's immune system. CTLA4-Igis an immunosuppressant that has been used in clinical trials to treatpsoriasis. "This research gives us yet another indication that donor DCsgenetically modified to protect themselves are less likely to disappear...
News Backgrounder: Duke Primate Center Successfully Fosters Mysterious Aye-Ayes
...asnicknamed "Starvin' Marvin," because he had been rejected
by his mother, who hadbecome ill immediately after birth last February. But the Duke University Primate Center veterinarian and animaltechnicians resolved that Marvin wouldn't starve for long. They set out to savethe little creature, known as...
DFG To Set Up 14 New Collaborative Research Centres
...hanged. Equally high is the number of applications rejected
after very strict review andassessment. In the last round of decision-making, for instance, seven out of a total of 21applications were unsuccessful. Collaborative research centres are centres of outstanding research performance which, whilehaving a ...
UB Fertility Researchers Find They Can Predict Pregnancy By Assessing Two Sperm Abnormalities
...ed in Children's Hospital of Buffalo. Samples were rejected
if the male did not follow instructions carefully or if the samples were more than one hour old. Each sperm slide was scored for percentage of sperm showing the premature acrosome reaction or evidence of chromosomal decondensation. These scores...
Pitt Researchers Develop Strategy To Use Dendritic Cells To Treat And Prevent Tumors
...lished tumors. Mice receiving this fusion vaccine rejected
their tumorsand survived until the end of the experiment (72 days) without any evidence oftumor cells. Similar findings were observed when researchers vaccinated another setof mice with established tumors using DC's that were simply co-cultur...
Pitt Researchers Construct Novel Delivery System For Gene Therapy Of Liver Disorders
...ed by the body asforeign substances and are either rejected
or destroyed by the body's immunecells. Non-viral vectors, like the RCRs, can overcome these problems, but inthe past, these types of vectors have proven only marginally effective intransferring their cargo of genes to target cells. "The r...
Summer Science: Firefly Babies Advertise Their Bitter Taste, UD Researchers Say
...worm--a delicacy forrodents. As expected, all mice rejected
the bitter fireflies, Tallamy says, evenwhen they were still hungry enough to eat more mealworms. Next, the UD researchers tested the ability of mice to associate light with abitter taste. At one end of a Y-shaped maze, they placed a single piece ofc...
Duke researchers find existing drugs can stop fungus that attacks AIDS patients
...lant rejection, Heitman tried severalthat had been rejected
as organ transplant drugs because they did not suppressthe immune system. One of these, a compound called L-685,818, a close analog of the U.S. Food and Drug Administration-approveddrug FK506, proved toxic to the fungus, while sparing normal immune ...
Humble Pocket Gophers Shed Light On The Genetic Fortitude Of Cheetahs
...rs from a population with higher genetic diversity rejected
skin grafts from their neighbors--an experimental ...rs onto a few of the Humboldt gophers; the animals rejected
them. Soule notes that the range of genetic variation among different populations of pocket gophers,...
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