| http://www.w3.org/ns/prov#value | - 11/155464International Classification: B01D015/08U.S. Classification: 210635000, 210656000, 436161000, 436177000Abstract: The invention provides extraction columns for the purification of an analyte (e.g., a biological macromolecule, such as a peptide, protein or nucleic acid) from a sample solution, as well as methods for making and using such columns.
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