| http://www.w3.org/ns/prov#value | - ribed above, to which has been added a complex-forming component which is soluble in the culture medium, in particular a cyclodextrin, a cyclodextrin derivative or a mixture of two or more cyclodextrins and/or cyclodextrin derivatives; the centrifugate is mixed with a resin, especially a polystyrene resin, or is run through a column filled with such a resin; if necessary, the resin is washed with
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