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|  | from John Langley
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|  | {{Sugdef|Product Ion
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|  | |An electrically charged product of the reaction of a particular precursor ion. In general, such ions have a direct relationship to a particular precursor ion and indeed may relate to a unique state of the precursor ion. The reaction need not necessarily involve fragmentation. It could, e.g. involve a change in the number of charges carried. Thus, all fragment ions are product ions but not all product ions are necessarily fragment ions.
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|  | ::--[[User:Kkmurray|K. Murray]] 23:21, 3 Mar 2005 (CST)
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