Assertion: nucleic acid | /r/CapableOf | charge changing after one or more optional steps
Facets:
value: optionally
type: MANNER
Source sentences:
text: After one or more optional steps of washing the solid support having the nucleic acids and the shielding and optionally charge changing compound(s) bound thereto, the nucleic acids can be eluted directly by a low salt, mild pH elution solution.