Word: self
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Dates: during 1980-1989
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...affairs outside their immediate religious communities. Voter registration, for example, is a major goal at the Los Angeles center. Los Angeles was the birthplace, six months ago, of the Muslim Political Action Committee, which aims to advance the rights of American Muslims as well as such overseas causes as self- determination for Palestinians in Israeli-occupied territories. Another goal: electing a Muslim to the U.S. Congress by 1992. "We'd like people to start thinking of the U.S. as a Judeo-Christian-Muslim society," declares Salam Al- Marayati, MPAC's Iraqi-born spokesman. Ironically, the role models for MPAC...
...pseudopods (false feet), does more than just ingest the intruder. It has another, even more important function. On its surface, like virtually all body cells, the macrophage carries MHC (for major histocompatibility complex) molecules, protein badges that enable other immune cells to recognize the macrophage as friend, or self, and not attack it. After digesting the virus, the macrophage proudly displays strips of protein from the virus in the grooves of some of its MHC molecules. Once a bit of protein -- which is part of the virus's own identity molecule, or antigen -- is nestled in the groove...
...starfish and a short time later observed that the thorn had been completely surrounded by cells. The cells were phagocytes. "These little guys go back in evolution a very long way," says Carol Reinisch of the Tufts School of Veterinary Medicine. "They have the ability to distinguish between self and nonself, which is the crucial distinction...
...more devastating errors of the immune system involves its failure to distinguish between self and nonself, resulting in so-called autoimmune diseases, which can be crippling and sometimes fatal. Dozens of disorders that once mystified doctors are now thought to be autoimmune. Among them: Type 1 diabetes, myasthenia gravis, multiple sclerosis, rheumatoid arthritis and systemic lupus erythematosus. In these and other autoimmune diseases, the immune system mounts a selective and ferocious assault against parts of the body, destroying cells or cell components that it mistakenly identifies as alien...
...chances of eventual success, Mitterrand last weekend called a snap parliamentary election. In a televised statement, he announced that he was dissolving the National Assembly and summoning voters to the polls on June 5 and 12. His aim: to win Rocard a parliamentary majority. Rocard, 57, is a pragmatic self-described social democrat who launched an aborted challenge to Mitterrand's candidacy in 1981 and opposed the sweeping nationalizations that followed the Socialist victory that year. A former Agriculture Minister, Rocard has consistently emerged in opinion polls as one of France's most popular politicians...