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The first pictures from the new Swedish solar telescope on La Palma, Canary Islands, are presented in an article in the prestigious science journal Nature from November 14. The images of the sun are the most detailed ever seen. One of the most sensational discoveries is a previously unknown detailed sunspot structure.
The impact of this discovery is now capturing the attention of solar researchers, and it won`t be long before new and revised theories are formulated.
The solar tele
From ultraviolet radiation to food carcinogens, our bodies are bombarded with stuff that can make a normal cell go haywire, multiplying out of control and turning cancerous. Thanks to a set of tumor suppressor genes, however, we can defend against this daily onslaught.
Goaded into action, these genes push cells into a kind of molecular menopause, called senescence. The cells remain healthy, but they stop reproducing.
Researchers often assume that we need our tumor suppressor genes
A paper published in the December, 2002 issue of Infection and Immunity by a research team at the Louisiana State University (LSU) Health Sciences Center in New Orleans provides clear evidence that the lethal toxins of such infectious bacteria as Pseudomonas and anthrax can be blocked by a drug developed at the LSU Health Sciences Center in New Orleans. The compound, called D6R (hexa-D-arginine), is a potent, stable, small molecule inhibitor of furin.
Bacteria produce a number of toxins whic
American Heart Association meeting report
Researchers have built mechanically sound blood vessels out of tissue from human skin cells, according to a study reported today at the American Heart Association’s Scientific Sessions 2002. The technique involves tissue engineering, an emerging science that takes cells from the body, manipulates them in the laboratory to create functional tissue, and puts the new tissue back into the patient.
The goal is to produce healthy, fun
Nicotine isn’t all bad, despite its addictive qualities and its presence in tobacco products, increasingly taboo in these health-conscious times. As a chemical compound, nicotine even has beneficial properties. It’s used around the world as a relatively cheap, environmentally friendly insecticide, repelling bugs that attack tobacco and other plants, and – contrary to popular misconceptions – it is not a carcinogen.
Take a nicotine molecule and snip off a methyl group, though, and y
The name is Fung. Daniel Y.C. Fung
He may not possess the lethal aggression or magnetism of the fictitious secret agent James Bond, but like Agent 007, Daniel Y.C. Fung is always on a mission of deadly proportions. While Bond’s assignments usually involve international intrigue and saving the world from evil villains, Fung’s life’s work is devoted to saving the world ’s food supply from deadly pathogens and bacteria. And where Ian Fleming’s cool, hard hero ha