Coombs' test. any of a number of tests to ascertain the presence or absence of immunoglobulin and complement in the coating of erythrocytes. Rabbit antihuman serum is used to act as a bridge between sensitized cells, yielding agglutination (a positive result).oombs' test. n. Either of two tests for detecting red blood cell antibodies: the direct test, for detecting sensitized red blood cells in erythroblastosis fetalis and in acquired hemolytic anemia; and the indirect test, for cross-matching blood or investigating transfusion reactions.
Climate is what we expect, weather is what we get. Climate refers to the average weather conditions in a certain place over many years. For example, the climate in Minnesota is cold and snowy in the winter, and the climate in Honolulu, Hawaii, is warm and humid all year long. The climate in one area, like the Midwest or Hawaii, is called a regional climate. The average climate around the world is called global climate. When scientists talk about global climate change, they're talking about the global climate and a pattern of change that's happening over many years.
Weather is a term that encompasses phenomena in the atmosphere of a planet. The term is normally taken to mean the activity of these phenomena over short periods of time, usually no more than a few days. Average atmospheric conditions over significantly longer periods are known as climate.