Assertion: fibril's affinity | /r/HasProperty | retained in column
Facets:
Source sentences:
text: This technique works by allowing proteins with an affinity for metal ions to be retained in a column containing immobilized metal ions, such as cobalt, nickel, copper for the purification of histidine containing proteins or peptides, iron,zinc or gallium for the purification of phosphorylated proteins or peptides.