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Tag: "needles" at biology news

Dysentery uses 'sword and shield' to cause infection

...ace of the bacteria are shortened. This allows the needles to inject proteins, while protecting the bacteria from being destroyed by the immune system. Dr Tang adds: "This discovery greatly expands our understanding of how bacteria are sometimes able to evolve although it is unlikely to result in new treatm...

New Clues Add 40,000 Years to Age of Human Species

...000 years of Homo sapiens without harpoons, music, needles or even most tools. This is another mystery yet to be solved," he said. When Richard Leakey, F. Clark Howell, Camile Arambourg and teams of Kenyan, American and French researchers first ventured to the Lake Turkana region in 1967, they searched for...

Needling Chromosomes Reveals Cell Division Secret

...he high art ofmanipulating two infinitesimal glass needles to impale each of twosister chromatids in cultured... was extraordinary, said Nicklas. "First ofall the needles are invisible in the cell, so you have to continuallymove them back and forth to detect their positi...

Pulsating ultrasound enhances gene therapy for tumors

...current, are limited to surface lesions or require needles to be inserted in the body. Pulsed-HIFU is non-invasive and can treat any area of the body accessible by ultrasound, the exceptions being the lungs and bones. Additional advantages of pulsed-HIFU include no scarring, limited blood loss and infections...

Marine sponge yields nanoscale secrets

...he tissue you're left with a handful of fiberglass needles as fine as spun glass or cotton. This primitive sk...covered that the center of the sponge's fine glass needles contains a filament of protein that controls the synthesis of the needles. By cloning and sequencing...

AIDS Public Awareness Campaign Expands Following Report Of Rapidly Progressive HIV

...lly with someone who has injected drugs; * Shared needles for drug use, body piercing or tattooing; * Had a sexually transmitted disease (STD); and/or * Have engaged in sex with multiple partners. People who wish to be tested for HIV/AIDS may contact: * New York State HIV/AIDS Hotline - 1-800-541-AIDS ...

Scalpel-free surgery could reduce risk of HIV and hepatitis exposure for health care workers

...chnique which uses high-technology alternatives to needles and knives. We advocate using these techniques whenever possible in high-risk settings to further protect health care workers from accidental transmission," added Makary. Sharpless surgical techniques include laparoscopy, electrocautery to replace s...

High carbon dioxide levels spur Southern pines to grow more needles

...arbon dioxide expected by mid-century produce more needles than those absorbing today's levels of the gas, ev... elevated CO2 had on average about 17 percent more needles than untreated pines. Higher needle percentages in trees receiving the gas were recorded even during...

Student scientists create living bacterial photographs

...h a laser, we can manipulate their biology without needles or syringes," says Tabor. "We just turn it on or off with light." Other students and researchers who participated in the project were Laura Lavery, Zachary Booth Simpson, Matthew Levy, Eric Davidson and Alexander Scouras. Faculty advisers were Ellin...

Lethal needle blight epidemic may be related to climate change

...othistroma septosporum, causes trees to lose their needles and, in the case of the British Columbia outbreak, eventually die. D. septosporum has long been recognized as a pathogen of pines, but although it is considered a serious disease of exotic plantations in the Southern Hemisphere, it has until now been...

Many needles, many haystacks

...d predicting where they fit in is like looking for needles in haystacks." Or like looking at a line of automobiles and trying to decide which one a bulky motor fits into ?versus trying to find where a tiny screw goes. Linear motifs are so small that it is hard to tell what features allow them to bind to oth...

Needle-free immunizations

...rd world countries, improper and unsafe use of the needles used in injections causes millions of cases of hepatitis B and hepatitis C, and thousands of HIV infections. The World Health Organization has estimated that as many as one-third of immunization injections are unsafe in four of it six geographical r...

New GI technologies improve internal organ visualization

...angiography using several different gauge aspirate needles (19g, 22g and 25g). Pigs were then euthanized to examine the results. The process demonstrated excellent visualization of the vasculature, and without any technical difficulties in injecting each artery. The 25g needle did not cause any visible v...

Study details hepatitis C ability to block immune system response

...se of unscreened blood transfusions, and re-use of needles and syringes that have not been adequately sterilized. Viral infections like hepatitis C often trigger an immediate innate immune response involving release of type 1 interferon (IFN-? and IFN-?). In turn, type 1 interferon stimulates the productio...

New HIV statistics indicate increasing toll of AIDS on African American community

...tions is attributed to the sharing of contaminated needles through injection drug use. Reducing the role of injection drug use in the spread of HIV will require an increased investment in education and substance abuse programs designed to prevent people from using injection drugs in the first place and help...

Fungal factories may save hemlock forests

...r infestation, feeding on the sap at base of their needles and cutting off their nutrients. While the adelgid, originally from Japan and China, appears to have no successful predators in North America, some native fungi—like the one Costa and Grassano have growing on branches in their laboratory—kill the ...

Immunization rates hit record high in poor countries

...r infestation, feeding on the sap at base of their needles and cutting off their nutrients. While the adelgid, originally from Japan and China, appears to have no successful predators in North America, some native fungi—like the one Costa and Grassano have growing on branches in their laboratory—kill the ...

Cryoablation -- A new treatment option for some kidney tumor patients

... subset of patients. Percutaneous ablation uses needles to penetrate the skin and deliver directly to the ... In percutaneous cryoablation, one or more hollow needles are inserted through the skin directly into a tumor. Doctors can observe and guide the insertion by...

Radiation therapy combo cures prostate cancer long-term

...seeds are inserted into the prostate through small needles during a brief outpatient procedure. External beam radiation therapy involves a series of 25 short daily outpatient treatments, where a radiation oncologist precisely directs high energy radiation beams to kill cancer cells. "This study is exciti...

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