Word: bacterias
(lookup in dictionary)
(lookup stats)
Dates: all
Sort By: most recent first
(reverse)
Ordinary lymphocytes attack and destroy bacteria but usually fail to kill tumors. The MGH researchers theorize that lymphocytes stimulated with the drug may be able to destroy or at least limit the growth of cancer tumors...
...method, which like radiology was developed around the turn of the century, is simple: food passes through a lead-shielded concrete chamber where radioactive cobalt 60 or cesium 137 bombards it with gamma rays, killing insects and bacteria and sometimes slowing ripening. The food does not become radioactive. "There's nothing in common at all between a nuclear reactor like Chernobyl and an irradiator," says Karl Abraham, a spokesman for the Nuclear Regulatory Commission (NRC). "It's like comparing bananas to tigers." Treated food "can be immediately eaten," says George Giddings, director of food irradiation at Isomedix...
Supporters claim that gamma-ray exposure offers an alternative to controversial pesticides, fumigants and preservatives, and protects human health by killing parasites like trichina worms in pork and bacteria like salmonella, which causes food poisoning. Irradiation, they note, can extend shelf life. "We see the day when you can go into a supermarket and buy a barbecued chicken that has been cooked, vacuum-packed and irradiated. It can sit on the shelf for eight years, and all you'll have to do is heat it up," predicts Physicist Martin Welt, founder of Radiation Technology...
...turn squishy. Other claimed advantages may have drawbacks. Irradiation "can kill the organisms that produce the signals and odors that warn people they are eating spoiled food," cautions Leonard Solon, director of New York City's Bureau for Radiation Control. "But it may not be able to kill the bacteria that cause food poisoning...
Howard C. Berg, professor of cellular and developmental biology, before beginning his lecture on bacteria movement...