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Reject in Biological News

Food security for leaf-cutting ants: Workers and their fungus garden reject endophyte invaders

New diseases directly affect human survival and food security, especially as population density climbs. Leaf-cutting ants, one of a few groups of social insects to cultivate crops, have harvested plant material to fertilize their underground fungal gardens for ~50 million years. New results from t...

M2SYS Introduces Revolutionary Biometric Artificial Intelligence Technology to Significantly Reduce Fingerprint Software False Reject Rates

Award-Winning Fingerprint Biometrics Firm Leverages Innovative Dynamic Profiling Technique to Resolve the Widespread Industry Problem of False Negative Match Results ATLANTA, Feb. 27 /PRNewswire/ -- M2SYS, an award-winning biometric technology research and developmen...

Pitt researchers find promising candidate protein for cancer prevention vaccines

... in high-risk individuals. Mice that were vaccinated to boost their immune response against this cell cycle protein, called cyclin B1, were able to reject a tumor challenge in which they were exposed to a cancer cell line that overproduced it, explained senior author Olivera Finn, Ph.D., Distinguished Pr...

Humans related to orangutans, not chimps, says new Pitt, Buffalo Museum of Science study

...rom the University of Pittsburgh and the Buffalo Museum of Science. Reporting in the June 18 edition of the Journal of Biogeography , the researchers reject as "problematic" the popular suggestion, based on DNA analysis, that humans are most closely related to chimpanzees, which they maintain is not suppor...

New therapy substitutes missing protein in those with muscular dystrophy

... via gene therapy or stem cells is difficult because muscle tissue makes up such a large portion of the human body. Furthermore, the immune system may reject the cell or gene treatment because patients would treat the newly introduced cells or genes as a foreign substance. Ervasti's method may conquer bo...

Gene decides whether coral relative will fuse or fight

... When coral colonies meet one another on the reef, they have two options: merge into a single colony or reject each other and aggressively compete for space. Now, a report in the March 19th Current Biology , a Cell Press publication, has found a gene that may ...

Vanderbilt scientists invent world's smallest periscopes

...roblem when working at the low light levels involved. Being able to pinpoint actual light sources in two or three dimensions allows the researchers to reject spurious signals. This should be useful in quantitative fluorescence or bioluminescence studies: Cells can be genetically modified to glow in the dark...

New tool could unpick complex cancer causes and help sociologists mine Facebook

...roteins. The technique even able to cope with misconceptions in current understanding of particular networks as it the was designed to "overturn" any reject any data included in the "Informative Priors" that was consistently at odds with any observed new data. Analysis with these network models was much...

Gene therapy corrects sickle cell disease in laboratory study

...py to produce fetal hemoglobin. We think that increased fetal hemoglobin expression in patients will be well tolerated and the immune system would not reject the hemoglobin, in comparison to other approaches." While Persons believes that the mouse experiments will lead to treatments in humans, he caution...

Researcher tricks immune system in diabetic mice

...ated cells into diabetic mice before and after the mice underwent islet cell transplantation. As a result, the immune system of the mice didn't try to reject the cells, because it didn't perceive them as foreign and dangerous. When the same test was done without pre-treated cells, the immune system rejec...

New technique eliminates toxic drugs in islet transplant in diabetic mice

...ated cells into diabetic mice before and after the mice underwent islet cell transplantation. As a result, the immune system of the mice didn't try to reject the cells, because it didn't perceive them as foreign and dangerous. When the same test was done without pre-treated cells, the immune system rejec...

American Chemical Society's Weekly PressPac -- Nov. 19, 2008

...ents with insulin-dependent diabetes. However, the procedure currently is ineffective for most people due to a tendency of the body's immune system to reject transplanted cells. Studies by others indicate that a specific enzyme, caspase-3, plays a key role in carrying-out this destructive process. To add...

Female embryonic sexual development driven by universal factor

... SRY suppresses "Z" and allows the default option (development of testes) to occur. This theory was complex and ambiguous, however, leading some to reject it. Yao and graduate student Chia-Feng Liu wanted to investigate a particular player in the cast of molecules known to be involved in transforming ...

NC State finds new nanomaterial could be breakthrough for implantable medical devices

...al Materials , is the first in-depth study of the biological and physical properties of the membranes. The study suggests that the human body will not reject the nanoporous ceramic membrane. Narayan adds that this could be a major advance for the development of kidney dialysis membranes and other medical de...

Embryonic stem cells might help reduce transplantation rejection

... transplanted into the recipient mouse a donor mouse heart that had the same genetic make-up as the previously injected stem cells, the T-cells didn't reject the heart because they recognized it as compatible," Zavazava said. "If we could eventually use this approach for organ transplantation in humans,...

How birds spot the cuckoo in the nest

...trum of an egg would affect a bird's ability to recognise it as foreign and reject it. Would a blackcap recognise and evict an impostor egg if the reflected U... UV reflectivity had such a significant effect on the blackcap's ability to reject an impostor. Having found that an interloper's UV appearance is key to its ...

Mate choice in plants

...ants, and insects, but there are also mechanisms for keeping out unwanted pollen. Some plants happily self-fertilize with their own pollen but others reject such pollen because of the deleterious effects of inbreeding. In these plants, their own pollen or that of close relatives is rejected if it lands on...

European Science Foundation aims to strengthen 'regenerative medicine'

...ells are taken from the person being treated, there are no problems with the body's immune system recognising the cells as 'foreign' and attempting to reject them, something that is still a problem with organ transplantation, for example. To help ensure that Europe retains its competitive edge in the fie...

Livermore researchers use carbon nanotubes for molecular transport

...searchers wanted to find out if the membranes with 1.6 nanometer (nm) pores reject ions that make up common salts. In fact, the pores did reject the ions and the team was able to understand the rejection mechanism. "O...

Are humans hardwired for fairness?

...Person A has a pot of money, say $23, which they can divide in any way they want with Person B. All Person B can do is look at the offer and accept or reject it; there is no negotiation. If Person B rejects the offer, neither of them gets any money. Whatever Person A offers to Person B is an unearned win...

Human vascular system in mice

...f a network of human blood vessels by means of growth factors. The mice were genetically modified in such a way that their immune system was unable to reject the foreign cells. The newly formed blood vessels are made exclusively of human endothelial cells, explains Anna Laib, a young researcher at the DKFZ....

Most people believe smallpox not an extinct disease

...produced the same result in London or elsewhere in Britain), says Dr Dixon. But smallpox elimination is not just a piece of history. When people today reject immunisation against other killer diseases such as measles, they are often unaware of the huge impact vaccines have made in protecting us not only aga...

Evolution education is a 'must' says coalition of scientific and teaching organizations

... benefited so greatly from science and reason, it is ironic that some still reject the tools that have afforded them the privilege to reject them, says Gerald Weissmann, MD, Editor-in-Chief of The FASEB Journal. ...

Data on life expectancy show many countries clustered in high mortality traps

...ch cluster had moved up by about 10 years. ( Mode is the value occurring most frequently in a series of observations or statistical data.) The authors reject the idea that these changes reflect a simple convergence process, that instead, the data suggest continuous advances within the cluster but that low l...

Fair play in chimpanzees

...bly rejected was the 10/0 option (responder gets nothing). The researchers conclude that chimpanzees do not show a willingness to make fair offers and reject unfair ones. In this way, they behave like selfish economists rather than as social reciprocators. ...

Study investigates 'divorce' among Galapagos seabirds

...rce increases with the birds’ success at breeding and raising a chick, because the effort required may tire out the male and consequently his mate may reject him.” It also shows that males of this species are probably never permanently in or out of the mating game, in contrast to many other animals, sh...

UCLA: How does your brain respond when you think about gambling or taking risks?

...gen. For each question, the participants answered whether they would strongly agree to the gamble, weakly accept it, weakly refuse it or strongly reject it. Participants were not told whether they had won or lost until after they left the scanner; afterwards, the researchers randomly selected three of ...

Proteins may predict lung transplant rejection

...il, and when signs of chronic rejection appear, it is usually too late to reverse it, she said. If doctors can predict which patients are beginning to reject the transplanted organ, they could try to head it off, she said. The study, "Proteomic biomarkers of chronic lung allograft rejection," was carri...

Scientists find a key to immune system's ability to remember

... aid in the development of vaccines against infections like AIDS, and help victims of autoimmune diseases and transplant patients whose immune systems reject donor organs. The protein, which scientists call Lck, is essential for immune system T cells -- white blood cells that attack virus-infected cel...

A transplant in time

... too early, when they are still fairly undifferentiated, may form tumors, while those taken too late can be identified as foreign, causing the host to reject them. By taking spleen tissue from embryonic pigs over the course of gestation, they found that the harmful T cells are not present in the tiss...

Lost in thought: Brain research

... Can one literally "lose oneself" in an experience? Many theoretical models of the mind reject this notion, proposing that awareness is dependent on the mediation of areas involved in self representation ?a vigilant, self-aware "observer" networ...

Successful transplantation from pig embryos to mice

...ed, can give rise to tumors. Past the window, however, they may be too well-developed: The host identifies these cells as foreign, causing the body to reject them. By transplanting tissues from pig embryos into mice lacking proper immune systems, they determined that the best time frame for pancreatic tissu...

'Sticky' mice lead to discovery of new cause of neurodegenerative disease

...region of the synthetase enzyme that "edits" the loading of the correct amino acid, alanine, onto its carrier tRNA. This editing enables the enzyme to reject incorrect amino acids. The researchers found that the mutant enzyme would charge an incorrect amino acid, serine, which resembles alanine, to tRN...

New analysis shows three human migrations out of Africa

... of no interbreeding is so grossly incompatible with the data, that you can reject it." Templeton's analysis is considered to be the only definitive statis...ution science for more than two decades. "Not only does the new analysis reject the theory, it demolishes it," Templeton said. Templeton published his ...

Curry and cauliflower could halt prostate cancer

...nds as alternative, supplementary or complementary medications. For Kong's study, researchers used mice bred so that their immune systems would not reject foreign biological material and injected the mice with cells from human prostate cancer cell lines to grow tumors against which the compounds could be...

UCSD biologists find new evidence for one-way evolution

...the Solanaceae family, which include tomatoes and tobacco, to recognize and reject their own pollen, thereby avoiding self-fertilization and the harmful effec...h can set seed by self-fertilization. Apparently, once lost, the ability to reject pollen in order to prevent self-fertilization is never regained. Irrev...

Worms know bad food when they smell it

...nimals, including invertebrates such as snails and fish. "We don't know if they feel nauseous," Bargmann said, "but we do know that they will learn to reject the food that's made them ill." The group carried out further experiments to explore how worms learn to avoid toxic foods. The results, Bargmann s...

Plant gene related to cancer treatment may foster new oncology drugs

... in the process that controls plant growth may help explain why human cells reject chemotherapy drugs, according to an international team of scientists. R...unctioning of the multi-drug resistance process in which human cancer cells reject anticancer treatments," Murphy said. Results of the two studies suggest ...

Simple sea sponge helps scientists understand tissue rejection

... Understanding why some transplant patients reject their new organs requires a working knowledge of how cells recognize and accept or reject each other. Xavier Fernndez-Busquets, an MBL resea...r pieces of different individual sponges that will reject each other--a process that approximates what somet...

Discovery of T-cell 'traffic control' boosts new drug promise

...ne reactions, Goetzl says. "Transplanting organs or even cells, such as insulin-producing Beta cells, into a patient triggers immune reactions that reject the transplant, but a drug such as FTY720 controls S1P function and slows the rush of T cells to the transplantation site without blocking normal immu...
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(Date:7/23/2014)... Basement membrane degradation and blood-brain barrier damage ... and brain functioning. Matrix metalloproteinase-9 is able ... basement membrane around cerebral blood vessels and ... Huilian Hou and colleagues from the First ... Jiaotong University, China induced cerebral infarction in ...
(Date:7/23/2014)... hippocampal region of the brain is important ... However, the underlying mechanisms are unclear. Dr. ... China monitored the activity of hippocampal neurons ... the mechanisms underlying the neuronal responses. Somatosensory ... changed local field potentials into theta rhythm-dominated ...
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(Date:7/23/2014)... voice on the recording was low and calm as the speaker ... with the human immunodeficiency virus (HIV) that causes AIDS: “My heart ... I was on the floor flat on my face boohooing, crying ... recording ended less than 10 minutes later. “Don’t feel like this ... is just God setting you up for something greater,” the anonymous ...
(Date:7/23/2014)... By Kathleen Doheny ... (HealthDay News) -- Weight-loss surgery appears to have an ... symptoms in women, according to a new study. ... a weight-loss surgery program reported having incontinence prior to ... their urinary symptoms either improved or disappeared, said study ...
(Date:7/23/2014)... By Amy Norton ... -- The timing of a girl,s first menstrual period may ... a new study suggests. Researchers have identified over ... of menarche -- a woman,s first menstrual period. The researchers ... a number of diseases ranging from type 2 diabetes to ...
(Date:7/23/2014)... genes have been focused on the regions of the ... the form of amino acids thus proteins. But just ... activator which controls the expression and activity of the ... the role exerted such DNA fragment in tumor development. ... in collaboration with the group of Manel Esteller, ...
(Date:7/23/2014)... likelihood of forming false memories, according to research published ... Association for Psychological Science. , In a study conducted ... of California, Irvine and colleagues, sleep-deprived people who viewed ... false information about the photos were more likely to ... were those who got a full night,s sleep. , ...
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