Tag: "rejected" at biology news

Planting time for forest trees branches out to new seasons

...h planting season. Fall planting has been largely rejected by foresters, mainly because it's "terribly, terribly hot" and often dry in much of the southern forest region, making it hard for even the most adapted plants to survive. "We pray for autumn rains," Messina said. "A tropical storm can be a blessing...

Scientists prove how geckos stick, unlock secrets to making artificial gecko glue

...r attractive forces called van der Waals forces, rejected a competing model based on the adhesion chemistry of water molecules, and discovered that the gecko's adhesive depends on geometry, not surface chemistry. In other words, the size and shape of the tips of gecko foot hairs--not what they are made of...

Preserving options: Short-term action required to avoid long-term climate damage

...the Kyoto Protocol, the international agreement -- rejected by the United States, but recently ratified by the European Union and Japan -- for reducing greenhouse gas emissions. They found that the Kyoto reductions would be an adequate first step for staying with the 450 parts-per-million limit. Further steps...

Mechanism that enables fetus to survive in mother under study

...gn being implants on the uterine wall he should be rejected like a transplanted organ by the mother's immune system. A major research finding in 1998 from another team of MCG researchers led by Drs. Andrew L. Mellor and David Munn showed that early in pregnancy, at the time of implantation, placental cells...

Collaboration advances potential therapy for autoimmune diseases

...e used only one or two times before the human body rejected them. Antibodies are proteins that bind to and disable foreign proteins, called antigens. With fully humanized antibodies, the human body potentially could accept them over longer periods of time, thus providing for long-term treatment. The Russia...

1st evidence that nuclear transplantation ('therapeutic cloning') can eliminate tissue rejection

...echnology paper reports that cloned cells were not rejected in cattle despite the presence of the foreign mitochondrial DNA. The immune system in cattle is relatively complex; therefore, these "preclinical" studies suggest human applications may be possible. In addition to creating skeletal muscle and heart ...

A green tea extract could help alleviate shortage of livers available for transplant

...plantation and lead to the inclusion of previously rejected livers into the pool of organs available for transplantation....

New report documents dramatic decline in beluga sturgeon in the Caspian Sea

...ary, six-month suspension on sturgeon catches, but rejected the recommendations of scientists and conservation organizations to impose significant long-term reductions on the caviar trade that are needed to help save dwindling populations of sturgeon. In addition, the U.S. government is currently considering ...

Diversity of species triumphs

...in the biodiversity debate. A variety of tests all rejected the sampling effect. Results showed that as the number of species in a plot rose, so did the likelihood that the plot would outperform the top-performing monoculture. Specifically, the average productivity of 16-species plots was higher than the pr...

BioMed Central to consider charging authors for paper submissions

...e time of publication and would not be charged for rejected papers. These fees would also be waived selectively for authors who have difficulties with funding or are from regions with limited research budgets. Whilst BioMed Central would be pioneering author charges of this type, a number of journal publisher...

Study reveals differing attitudes to PGD among

...e same as their parents healthy carriers. If they rejected a carrier it would undervalue their own genetic status!" There were also many interesting trends observed in this study highlighting the attitudes of these couples towards several key issues. Only a very small number of couples from each group expre...

Officials delay trade restrictions on Caspian Sea caviar

...n catches through the end of 2001. However, CITES rejected the recommendations of scientists and conservation organizations to impose significant long-term reductions in caviar exports that are needed to help save dwindling populations of sturgeon, source of the majority of the worlds caviar. "Todays decisi...

BresaGen announces Australia's first cloned pig

...e geneticallymodified so that their organs are not rejected by the human immunesystem. Professor Tony d'Apice of St Vincent's Hospital Melbourne said: "Thiscloning technology will provide a method whereby the function of one ofthe genes thought to be important in the rejection of these organs canbe eliminate...

Immune system helps prevent tumors after all

... rejected. In contrast, the tagged tumors were not rejected when transplanted into RAG2-deficient mice. Thus, tagging the tumors facilitated their detection and elimination by the immune system. "We showed that if a tumor is forced to reveal itself to the immune system, it often is rejected," Schreiber expl...

New hope for neurodegenerative disease sufferers

...e courtship task looks at how males remember being rejected by females. "We have studied one type of 14-3-3 genes, and shown that when we turn it on, flies recover their learning abilities," says Skoulakis. "We would like to pursue these experiments by inserting the other human 14-3-3 genes in the flies an...

Federal government makes final call for data, public comment before writing new report on cancer-causing substances

...as a known human carcinogen by the NIEHS panel but rejected by the second government panel, which voted 6 to 2 for its listing as "reasonably anticipated to be a human carcinogen." The public panel split 5 to 5 on whether it should even be listed as "reasonably." The two government panels recommended that ...

New materials hold promise for human healing applications

...rrounding tissues. Moreover, the materials are not rejected by the host animals, and it is unlikely that rejection will be a problem in human treatment, Badylak said.The university is seeking companies to license the new materials in order to develop them into products that can be used in medical treatments f...

Advisory panel on federal report on carcinogens makes recommendations to NIEHS/NTP for new listings

...milar to asbestos but are not asbestos. The panel rejected a recommendation that these materials be listed as "known human carcinogens," and the panel split, 5 to 5, over whether the data on lung cancers in talc workers justified a listing as "reasonably anticipated to be a human carcinogen." ...

Turning blood into brain: new studies suggest bone marrow stem cells can develop into neurons in living animals

... cells taken from a patients own body would not be rejected by the bodys immune system. While the results are very promising, researchers need to answer many remaining questions before marrow-derived neural cell therapies can be tested in humans. A key question is what growth factors and other signals pro...

Chance discovery of 'immortal skin' holds medical promise

...lestone remains in proving the tissue would not be rejected by human patients, she says. Stratatech has plans to move quickly toward possible medical uses, with clinical trials and work with regulatory agencies leading to initial human trials by 2002. Allen-Hoffmann says a number of basic research projects at...

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