Tag: "derived" at biology news

Biotechnology promises major advances for U.S. Army

...anisms, tissues, cells or the molecular components derived from living things to make products or to perform functions. It's a technology used to produce drugs and antibiotics like penicillin, and to make new materials and devices. Biotechnology also sometimes involves altering the workings of cells or compo...

Important pathogens and cures belong to little-known group of fungi

...eneficial and detrimental properties to humans are derived from lichen ancestors. For example, the study dete...s, such as aspergilloses caused by the secondarily derived Aspergillus. The Herpotrichiellaceae (Chaetothyriales) is another example of a major fungal lineag...

GIS, bioinformatics collaborations offer promising new perspectives

...ficial. "Whether the maps used in a discipline are derived from aerial photos taken by a satellite, as with GIS, or discoveries at the microscopic level that are mapped by gene researchers, many of the processes and technologies are similar or the same," he said. Virginia Bioinformatics Institute (VBI) Dire...

Kangaroo, platypus are not related after all; Duke scientists refute current molecular method of classifying mammals

...common DNA traits and which did not. The data they derived from studying nuclear genes clearly identified marsupials (kangaroos, opossums, etc.) as having a common evolutionary background with eutherians (humans, pigs, etc.), and monotremes (platypus, echidna) as having evolved separately. Jirtle said these ...

Tiny trickster flies into the zoological books

... the name of the new family, 'Maamingidae'which is derived from a Maori word meaning 'trickster', and refers tothe unusual combination of characters that initially baffled theresearch team. Australia and New Zealand were once united with Africa, South America,India and Antarctica to form the supercontinent o...

UCSF scientists halt tumor growth by manipulating telomerase enzyme

...explore the strategy in human cancer cells freshly derived from patients - as opposed to those in the current study, which were grown continuously in the lab dish. (Researchers suspect that cancer cells grown in culture adapt for growth - changing their genetic content - and thus may behave differently than ...

Science researchers report 'extremely unstable' gene expression in cloned mice

...nsfer, is an inefficient one. Most cloned embryos, derived from the insertion of a donor nucleus into an emptied egg, die before birth. The clones that do survive frequently have respiratory and circulatory problems, and abnormally high birth weights. Some researchers have suggested that abnormal express...

New study shows normal-looking clones may be abnormal

...xhibited irregular gene expression just as animals derived from nuclear transfer using embryonic stem cells confirming that these abnormalities likely existed in the cells before the cloning procedure was performed. "While embryonic stem cells may be easier to developmentally reprogram than adult cells, they...

World land database charts a troubling course

...d the per capita consumption of goods and services derived from the natural resource base also continues to grow. Moreover, in some parts of the world intensive agriculture is exhausting the land, permanently removing acreage from production and the natural resource base. ...

Yale researcher testifies in support of embryonic stem cell research

...h are the "experts" in plasticity, than from adult derived cells. "Work on embryonic stem cells is invaluable and work on adult derived stem cells is just beginning," Krause said. "To close off one avenue because of premature assumption...

Scientists identify methane-consuming microbes from ocean depths

...methane as a carbon source from those using carbon derived from photosynthesis or other organic carbon sources. The researchers showed that the archaea and bacteria cells could be identified individually within the cell aggregates. The two kinds of microbes form a partnership to extract energy from methan...

AAAS letter to President Bush

...t "Public and private research on human stemscells derived from all sources (embryonic, fetal, and adult) should be conducted" and that"Federal funding for stem cell research is necessary in order to promote investment in thispromising line of research, to encourage sound public policy, and to foster public ...

Brain tumors and mouse models: New insight into the development of gliomas

... molecules called growth factors, such as platelet derived growth factor (PDGF). The second set of mutations disrupts the cell cycle arrest pathway, which regulates glial cell proliferation. Based on these findings, Dr. Holland and colleagues used genetic tools to express PDGF in different brain cells to inv...

Israeli teams grows heart cells and insulin producing cells from human embryonic stem cells

...bryonic stem cells have advantages over stem cells derived from adult tissues," Dr. Gepstein points out. "Th...human tissue. The group began with a line of cells derived from the earliest embryonic stem cell work. After growing an undifferentiated mass of cells by a no...

Cannibalism in the North Atlantic: Scripps researcher finds crustacean species keeps population in check by eating its young

...o the deep ocean. Data for the Nature study were derived from an intensive field study conducted in the center of a gyre, a closed ocean circulation system, in the Norwegian Sea north of the British Isles and east of Iceland at a destination called "Ocean Station M." Battling rough seas and waves that some...

Stem cell research is vital to finding cures for blinding diseases

... and the cornea the front of the eye stem cells derived from adult or postnatal animals show remarkable ab...use of federal funds for research using stem cells derived from donor embryonic tissue in an effort to find new diagnoses, treatments, and cures for blinding d...

UCSF study finds two old drugs may help fight prion diseases

...azine. When he discovered that phenothiazines were derived from methylene blue, a dye used in England in the 1850s, he examined other derivatives of the dye and determined that one, quinacrine, had a similar tricyclic scaffold and the same side chain structure as chlorpromazine. Whether further research int...

Survival tactics in bacteria - environmental conditions fit for mankind

...hor on the paper, modelled known X-ray diffraction derived structures into the calculated PSI supercomplex determined by these electron microscopy-based techniques. This allowed a better understanding of how the light harvesting antenna ring of PSII-like protein interacted with PSI. Professor Jim Barber: "Th...

AAAS urges immediate public release of sources of embryonic stem cell lines

...e of determining whether the cell lines "have been derived in a manner that would meet or exceed the ethical standards that the American public expects will be associated with such research." According to AAAS, the President's plan to establish a new Council on Bioethics to recommend guidelines and standards...

Vaccination following spinal cord injury: Innovative Weizmann Institute approach limits paralysis

...e spinal cord with peptides, or protein fragments, derived from the central nervous system. The peptides were selected so that they would boost the natural protective mechanisms of the immune system without triggering an autoimmune disease. Rats vaccinated with the peptides showed significant recovery of mov...

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