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Edited on Mon Apr-25-05 01:09 PM by ElsewheresDaughter
Scientists at the Mayo Clinic succeeded in creating human-pig chimeras by injecting human stem cells into pig embryos; the resulting adult pigs possess hybrid cells containing both pig and human genes. The hybrid cells were also found to be infected with porcine endogenous retrovirus (or PERV), suggesting that xeno-transplantation, the ultimate goal of such research, could lead to animal viruses jumping the species barrier to humans. Researchers in California accidentally created a "hyper-virulent" strain of tuberculosis when they disabled some genes in an attempt to make the bacterium less deadly. An envelope filled with 100-year-old smallpox vaccination scabs turned up in New Mexico. British health officials reported the first possible transmission of mad cow disease to a human via blood transfusion, and family members of people who have recently died of Creutzfeldt-Jakob disease in the United States were wondering whether mad-cow-infected beef was to blame. A new study found that hormones that leak out of cattle feedlots have been changing the sex of wild fish. British sperm counts were down 29 percent. A Colorado woman was jailed for falsely claiming that her son is a genius, and a frat boy at the University of Georgia killed and ate a rabid raccoon.
Scientists discovered that mice, rabbits, rats, beagles, geese, and other animals used in laboratories strongly dislike even relatively benign experiments and become genuinely terrified when they are handled by vivisectionists, when blood is taken from their bodies, or when tubes are inserted into their stomachs. Such daily routines of laboratory life produce elevated concentrations of corticosterone, prolactin, glucose, and epinephrine, all of which are signs of extreme stress, and it was pointed out that such stress reactions can seriously compromise the results of research on tumor development, immune function, cardiovascular disease, and other disorders. The chicken genome was sequenced, and it was said to contain between 20,000 and 23,000 genes, roughly the same number as humans. Man and chicken were found to share 60 percent of their genes. Australian reproductive scientists developed a "sperm magnet" to separate genetically damaged from healthy sperm, and scientists said that artificial fragrances in cosmetics, perfumes, shampoos, and other household products that are generally thought to be harmless are in fact hurting sea creatures by increasing their sensitivity to toxins. It was discovered that swordfish heat their eyes while hunting.
A new species of Indian monkey was identified, and British ornithologists announced that the evolution of great tits in Wytham Wood contradicts the standard Darwinian model. Researchers at Johns Hopkins University said that most alcohol-related airplane accidents happen at night and in bad weather. Genetic Savings & Clone delivered its first made-to-order pet clone, a kitten named Little Nicky that is a genetic copy of a Texas woman's beloved dead cat. Scientists discovered that organic ketchup is better at fighting cancer than the non-organic kind and that curcumin, the yellow pigment in curry, can help prevent Alzheimer's disease. Paralyzed rats in California were made to rise up and walk after they were injected with a soup made from stem cells, and a Spanish neuroscientist found that rats can tell the difference between spoken Dutch and Japanese. Zoologists speculated that cannibalism among hippos might have led to an anthrax outbreak in Uganda that has killed at least 220 of the beasts. "I knew hippos were nasty," said one anthrax expert, "but I didn't know they went around eating each other."
Studies of the Cascadia Subduction Zone off the Pacific coast suggested that tsunami-triggering earthquakes often come in clusters. Government experts in the United States discovered that young men dislike wearing seat belts, it was announced that almost half of America's food goes to waste, and a new study found that British women are increasingly overweight, intoxicated, and depressed. Researchers said that terminally in people are no more likely to die on holidays than on other days; other scientists concluded that Christmas is the deadliest day of the year. Ophthalmologists in Louisiana found the DNA of the herpes simplex virus type 1, a common cause of blindness, in the tears of 98 percent of a study's healthy participants, and scientists studying the neurobiology of facial recognition concluded that faces must be seen to be recognized. The largest explosion ever recorded was discovered in galaxy cluster MS 0735.6+7421; the eruption was caused when a supermassive black hole swallowed the mass of 300 million suns. An extrasolar planet was directly observed for the first time, and it was announced that the universe is still giving birth to new galaxies. Astronomers reported that dark matter is lumpy.
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