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.
(wÄ'Ér) The state of the atmosphere at a particular time and place. Weather is described in terms of variable conditions such as temperature, humidity, wind velocity, precipitation, and barometric pressure. Weather on Earth occurs primarily in the troposphere, or lower atmosphere, and is driven by energy from the Sun and the rotation of the Earth. The average weather conditions of a region over time are used to define a region's climate.