Super-Sensitive Molecule Created
Thursday, April 2nd, 2009Good Morning,
It never ceases to amaze me the scientific break-throughs
that occur. Just look at today’s issue. Scientists create
super-sensitive molecule and Modified tobacco plant may
block HIV, how can you not be astounded by that. The
wonders in this world will never stop surprising us.
Until Tomorrow,
Erin
Questions? Comments? Email me at: Email your comments
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——- Scientists create super-sensitive molecule ——–
TEL AVIV, Israel - Israeli chemists have engineered new
molecules that can be used to detect microscopic signs of
cancer, as well as explosive materials and water pollutants.
The Tel Aviv University researchers said both cancer cells
and the chemicals used to make bombs can foil detection
because they appear in trace amounts that are too small for
conventional detection techniques. But now the scientists
say they’ve developed a molecule that can magnify weak
traces of such tiny molecules into something that can be
more easily detected. Professor Doron Shabat, who led the
research, said he used nanotechnology to engineer the new
molecules that can identify biomarkers in cancer, explosive
materials or pollutants in water by amplifying them
tenfold, making them noticeable for doctors and crime
fighters. The study, conducted in collaboration with the
Scripps Research Institute in San Diego, was published
last year in the journal Chemical Communication.
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———- Atlantis is moved to its launch pad ———–
CAPE CANAVERAL, Fla. - Space shuttle Atlantis was moved
Tuesday to Launch Pad 39A at the Kennedy Space Center in
Florida in preparation for its scheduled May 12 launch.
The National Aeronautics and Space Administration said the
move started at 3:54 a.m. EDT and ended at 11:17 a.m. when
the spacecraft was securely fastened to the pad. Atlantis’
STS-125 crew will be making the final shuttle flight to
NASA’s Hubble Space Telescope. During the 11-day mission,
the crew is to conduct five spacewalks to install two new
instruments, repair two inactive ones and replace various
components. NASA said the updates will extend the Hubble
Space Telescope’s operational lifespan through at least
2014. Scott Altman will be the commander of the shuttle,
while astronaut Gregory Johnson will be the pilot. The
Atlantis crew will also include astronauts John Grunsfeld,
Mike Massimino, Megan McArthur, Andrew Feustel and Michael
Good.
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———- Modified tobacco plant may block HIV ———–
OWENSBORO, Ky. - A gel derived from a close relative to
the tobacco plant is being tested as an affordable
preventative measure for HIV, U.S. researchers said.
Kenneth Palmer, a senior scientist in the University of
Louisville’s Owensboro Cancer Research Program, has
published research that suggests growing large quantities
of the protein griffithsin found in the transgenic plant
Nicotiana benthamiana can prevent human immunodeficiency
virus from infecting cells of the immune system, the
university’s James Graham Brown Cancer Center said in a
release. Palmer said the drug could be manufactured in the
form of a microbicide gel or film for topical application,
with a selling price comparable to condoms. They modified
the tobacco mosaic virus to incorporate the griffithsin
gene and infected more than 9,300 tobacco plants.
Scientists were able to extract enough griffithsin to
produce about 100,000 HIV microbicide doses from the
leaves. The chemical performed identically to griffithsin
produced by other methods, the report said.
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