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Nike Air Jordan Retro 4 Blue

Nike Air Jordan Retro 4 Blue

as 10 colors simultaneously,' says Nie. Targeting the different size quantum dots to various types of cancer cells raises the possibility of "detecting multiple tumor cells by using multiple colors labeled with different [cancer seeking] antibodies," he adds. The probes are bright enough to shine through the skin. In the August 2004 Nature Biotechnology, Nie and his team reported on their quantum dot probes made of cadmium selenide decorated with antibodies that bind to prostate cancer cells. The probes revealed the cancer in mice as red blobs. Cadmium is a poisonous metal, however, so until long term toxicity studies of the nanoparticles are conducted, use of quantum dot probes will be limited to animals and tissue samples. BATTLE PLANS While researchers are pursuing a number of nanotechnology treatments, they're all variations on a theme: targeted cancer killing. "If you can kill cancer cells without affecting normal cells," says Hongjie Dai, a chemist at Stanford University, "that is the Holy Grail," Among the cast of nanoparticle characters in this work are dendrimers, carbon nanotubes, and liposomes.

Nike Air Jordan Retro 4 Blue

Nike Air Jordan Retro 4 Blue

The homing effect also appeared to reduce the drug's side effects, such as appetite loss. Baker says that his group is hoping to begin trials of the complexes in people during the spring of 2006. Carbon nanotubes, which are indeed tiny tubes of carbon, follow a different therapeutic path. They burn their way through cancer. The 150 nm long, 2 nm diameter tubes strongly absorb near infrared light and quickly turn the energy into heat, explains Dai. Focusing a near infrared laser on a solution containing nanotubes brought the water to a boil in 4 minutes, he .

Nike Air Jordan Retro 4 Blue

Nike Air Jordan Retro 4 Blue

Nike Air Jordan Retro 4 Blue

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James R. Baker Jr. , a physician and biomedical engineer at the University of Michigan in Ann Arbor, works with dendrimers, spherical polymer particles less than 5 nm in diameter. They have many chemically active branches emanating from their cores structures that are perfect for holding drugs and other molecules. To target dendrimers to cancer cells, Baker's group attached the vitamin folic acid to the particles. Cancer cells need a large supply of the vitamin to maintain their rapid growth, explains Baker, so they have Nike Air Jordan Retro 4 Blue many folic acid receptors on their membranes. Breast, kidney, lung, and several other types of cancer cells are particularly rich in these receptors. Baker's team also added the chemotherapy drug methotrexate to the folio acid loaded dendrimers. The researchers then injected the targeted drug dendrimer complexes intravenously into mice riddled Nike Jordan 4 Black

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As reported in the June 15 Cancer Research, the scientists found that the complexes, which are less than 20 nm in diameter, homed in on the cancer cells. This improved the drug's efficacy: The tumors in the mice receiving the targeted therapy grew much more slowly than did those in mice given only methotrexate or an untargeted drug dendrimer combo. Nike Jordan Shoes For Women

Nike Air Jordan Retro 4 Blue

with human epithelial cell cancer.

´╗┐lated by light, emit distinct amounts of energy, or different colors of light. With quantum dots, "we can. excite as many Air Jordan Grey Shoes

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