| http://www.w3.org/ns/prov#value | - In these cases the buffer/solvent conditions in the fractions are changed before the alteration step and/or after the alteration step which changing is performed with methods described in the art such as for example an extraction, a lyophilisation and redisolving step, a precipitation and redisolving step, a dialysis against an appropriate buffer/solvent or even a fast reverse phase separation wit
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