http://www.w3.org/ns/prov#value | - Several other recently introduced magnetic beads for the preparation of complex protein and peptide mixtures include Dynabeads WCX (weak cation exchange), Dynabeads PRC protein (weak hydrophobic reversed-phase bead for preparing samples of large peptides greater than 5,000 Da), and the Dynabeads SAX???a strong anion exchange magnetic bead. ???What we don???t have is a method of doing different typ
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