Assertion: immunoglobulin's solution | /r/HasProperty | filtered through a depth filter
Facets:
value: through a sterile filter
type: MANNER
value: optionally
type: MANNER
Source sentences:
text: Optionally, the substantially virus-safe IgG-containing solution is filtered, preferably through a depth filter as described previously in an earlier step of the present process and/or through a sterile filter.