Heterogenetic antigen An antigen which is possessed by a variety of different phylogenetically unrelated species; e.g., the various organ-or tissue-specific antigens, the alpha-and beta-crystalline protein of the lens of the eye, and forssman antigen. Synonym: heterophil antigen...
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The sea was teeming with life. Eventually, through reproduction and continued variation, fish came about. There are over..
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The water cycle (also referred to as the hydrological cycle) is a system of continuous transfer of water from the air, s..
