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Depletion of human serum albumin and immunoglobulin G from human plasma with the combination of anion-exchange and immunoaffinity short monolithic columns

In order to enable the detection of low abundance proteins from human plasma, it is necessary to remove high abundance proteins. Among them, human serum albumin and immonoglobulin G represent more than 75 % of all abundance proteins. There are many strategies developed for an efficient removal of these two main proteins, the majority of them rely on highly selective, yet expensive affinity techniques. In this work an affinity monolithic column was used for the depletion of IgG. For the removal of HSA we tested an alternative - complementary approach, where an ion-exchange mode was used as one of the depletion steps. the results were compared to the ones obtained by by using the prseudoaffinity columns.


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