Tag: "transfer" at biology news
Spiders: Chastity belts stop cuckoos in the nest
...etached tip plugs the orifice so securely that the transfer
of semen is probably largely excluded. The researchers have now been able to show that other species of wasp spiders also have this plugging mechanism. What they all have in common is that the female attempts to kill her partner during intercourse....
Discovery of new cave millipedes casts light on Arizona cave ecology
...ecimens. Gonopods are highly modified legs used to transfer
spermatophores (packets of sperm) to the females during reproduction. For the north rim species, Voyles explained that the discovery will result in the two caves becoming listed as 'significant' under the Federal Cave Resource Protection Act of 198...
UT-Houston scientists develop new procedure to differentiate human embryonic stem cells
... lower airways known as alveoli. Tissue thin, they transfer
oxygen into the blood and remove carbon dioxide. If the walls of the hundreds of millions of alveolus in a pair of lungs could be spread out and placed side by side, they would cover the floor of a classroom. According to Wetsel, transplantable al...
Over a century after disappearing, wild elk return to Ontario
...olf predation, illegal hunting and stress from the transfer
process. However, the death rate is decreasing each year, suggesting that the animals are adapting to their new home. Although pleased with the programs success to date, Rosatte asserts that the work is far from over. "Our challenge for the future ...
Mouse stem cell line advance suggests potential for IVF-incompetent eggs
...e very first stages of cloning compared to nuclear transfer
with fresh oocytes, the early (morulae- or blastocyst-stage) mouse embryos derived from nuclear transfer
using AFF oocytes showed similar rates of success in giving rise to embryonic stem cell lines. Non...
UCI awarded $3.5 million for stem cell research
... with a patients immune system usually involve the transfer
of the nucleus from a patients cell into a donated human egg cell from which the genetic information has been removed. Because of a shortage of donated human egg cells available for biomedical research, an urgent need to identify alternative sources ...
Air contaminants databases ease healthy homes planning
...created a software tool called ContamLink that can transfer
selected information from the databases into CONTAM, an indoor air quality modeling software program that predicts airflows and contaminant concentrations in multizone building systems. Togetherthe electronic databases, ContamLink, and the CONTAM pro...
New hope for regenerative medicine
... stem cell lines generated by somatic cell nuclear transfer
(also known as therapeutic cloning). Normal mammalian embryos inherit one set of chromosomes from the mother, and one set from the father. Embryos that inherit both sets of chromosomes from the same parent are not viable. They can, however, genera...
Mice cloned from skin cells
... stripped away from chromosomes during the nuclear transfer
process. This epigenetic reprogramming removes the... skin cells. Fuchs said that is the use of nuclear transfer
technology that researchers would like translate to human. All it would involve, she pointed out, is...
ACS News Service weekly PressPac -- Feb. 7, 2007
...fter the photolithography processes widely used to transfer
electronic circuits onto a semiconductor wafer by projecting light through a pattern or "mask." However, the new method uses a special laser to scan objects or patterns printed on transparency film with an ordinary desktop printer. The silhouette ult...
Scripps research study reveals structural dynamics of single prion molecules
...ding single-molecule fluorescence resonance energy transfer
(SM-FRET) and fluorescence correlation spectroscopy (FCS). Fluorescence resonance energy transfer
is a highly sensitive tool used to measure molecular structure and dynamics such as in single protei...
Scientists clone mice from adult skin stem cells
... co-author Peter Mombaerts. To execute the nuclear transfer
procedure, Li took unfertilized mouse oocytes and ...adult skin stem cells. A main hurdle in nuclear transfer
with adult cells has been its efficiency out of a hundred attempts, only a handful may succeed wit...
Loss of a universal tRNA feature reported
... extra guanylate nucleotide typically found in the transfer
RNA molecule tRNAHis. tRNAs are the molecules responsible for decoding sequence information specified by messenger RNA molecules, information which is ultimately encoded by the DNA template. tRNAHis is the specific tRNA that assists in incorporati...
Powerful ally in life sciences: UH research head to give keynote
...and biotechnology commercialization and technology transfer
to generate economic wealth for the area. With...arketable applications speaks to the areas of tech transfer
and IP, and how his finance background enhances his role in managing scientific research endeavors. ...
Man-made proteins could be more useful than real ones
...ynthesized in cells, and they are even loaded onto transfer
RNA molecules that carry the amino acid components to the protein-making machinery of the cell, the ribosome," she noted. "But to my knowledge, there are no ribosomally constructed proteins that contain -amino acids," she said. "The most provocativ...
Bioengineering efficient antibiotic biosynthesis in E. coli
...tant polyketide antibiotic precursor, requires the transfer
of two unusual sugars called mycarose and desosamine (both glycosyl groups) onto the nonsugar part of the glycoside molecule (macrocyclic aglycone). In a new study published online this week in the open-access journal PLoS Biology, Ho Young Lee an...
Does evolution select for faster evolvers?
...ences of parents are recombined. Horizontal gene transfer
(HGT) is a cross-species form of genetic transfer.... Deem described the importance of horizontal gene transfer
in the work in a January 2007 cover story in the Physics Today, showing how HGT compliments the modu...
DNA gets new twist: Carnegie Mellon scientists develop unique 'DNA nanotags'
...at are excited by one wavelength of light and then transfer
that excitation energy to "light-emitting" dyes on the nanotags surface. The light-emitting dyes can fluoresce at a different color from the light-harvesting dye. For example, one type of DNA nanotag can act as an antenna that efficiently harvests bl...
Together, biological membranes prevail
...nt method which used fluorescence resonance energy transfer
(FRET) technique to detect SNARE mediated membrane fusion. In FRET, a pair of green and red dyes is used where only the green dye can directly be excited by a laser. The red dye lights up if some of the energy from the green dye hops over to the red ...
Heat Exchanger Fouling and Cleaning -- VII
...ouling, i.e. the formation of deposits on the heat transfer
surfaces, is one of the main problems in the desig...st industrial situations, the inefficiency of heat transfer
resulting from fouling has a direct link to excess fuel consumption in the process. In addition to ...
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