Word: gamma
(lookup in dictionary)
(lookup stats)
Dates: during 1960-1969
Sort By: most recent first
(reverse)
...other cells as "self" (part of the same body) or "not self" (invaders to be destroyed). In the presence of "self" cells the lymphoid cells remain passive, but if they detect foreign material, they manufacture antibodies to contain or attack the invader. These antibodies are in the form of gamma globulin particles. Some remain on the surface of the lymphoid cells and circulate with them; others, free-floating, circulate in the blood stream. Both kinds adhere to cells in the foreign tissues of such organs as the transplanted heart. Which type is more important in graft rejection is still debated...
Last week Dr. Gerald Edelman and his colleagues at Rockefeller University demonstrated that they were equal to the challenge. They announced that they have successfully deciphered the chemical structure of an entire gamma globulin or antibody molecule, one of the basic defenders against disease in all the higher forms of life...
...Acid. Because these molecules occur in such enormous variety in the body, scientists can rarely get a large quantity of any single antibody from normal individuals. But one form of cancer of the antibody-forming cells, multiple myeloma, causes proliferation of cells that then mass produce a pure gamma globulin that is unique to each patient. From a cooperative myeloma victim, the Rockefeller researchers obtained samples of blood and processed it to extract the globulin antibody. The remaining blood was returned to the donor. In H years, they got what by molecular standards is a huge amount...
...Greek words that he uses to title his pieces), the musicians blow whistles, rattle maracas, clap wooden blocks and crack small whips besides coaxing unearthly sounds from conventional instruments. As in Terretektorh, the entire orchestra will be scattered throughout the audience during the world première of Nomos Gamma at France's Royan Festival next month. Perhaps his most extraordinary composition is Stratégic, which introduces mathematical game theory to the concert hall. Two full orchestras and two conductors literally duel for points on the same stage by improvising combinations in accordance with Xenakis' rules...
...created when gamma rays from an exploding weapon strike electrons in the surrounding air, causing them to move rapidly away from the center of the burst. Because of the shape of the warhead, the irregularity of the atmosphere or the proximity of the explosion to the earth, the pattern of the outward-speeding electrons is seldom symmetrical; the overall effect is similar to that caused by a flow of accelerating electrons in only one direction...