Word: celling
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Dates: during 1990-1999
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...viruses, bacteria and parasites. In the case of hay fever, the immune system perceives the fuzzy grain of pollen as a threat. The cause of the confusion, explains botanist Walter Lewis of Washington University in St. Louis, is a chemical message encoded by proteins in the pollen grain's cell wall...
Another type of immune cell that swings into action at the first hint of pollen produces a substance that is toxic to parasitic worms. "Probably the IgE response is there primarily to protect people against parasites," says Dr. Harold Nelson of the National Jewish Center for Immunology and Respiratory Medicine in Denver. Its response to pollen, he says, is simply a mistake...
Most doctors are convinced that a faster, more successful cure for allergies is bound to come. Using molecular-biology techniques, researchers have already identified IgE receptors on the mast cell, basically little berths in which the antibody docks. If they can find or synthesize another substance that blocks those receptors, they can prevent IgE from docking and unleashing the mast cell's stream of debilitating chemicals. And as scientists isolate and analyze more and more human genes, they may find the ones that, when defective, cause allergic reactions. Such discoveries could quickly lead to precise tests for allergies and eventually...
...CELLS FROM THE HUMAN FETUS, HARVESTED FROM elective abortions, have shown promise as a source of therapy for many incurable diseases. But four years ago, the Reagan Administration banned the use of federal funds for fetal-cell research, arguing that the practice would legitimize abortion...
...Suchinda promised that his military-dominated government would go along with some amendments to the Thai constitution aimed at reducing the soldiers' authority; parliament is to begin considering them this week. He also pledged to release thousands of arrested protesters (including Chamlong, who had been ushered from a jail cell to the King's chambers) and to consider lifting a state of emergency. Chamlong, for his part, appealed for an end to protest demonstrations that had turned into riots...