Assertion: comfrey's alkaloid | /r/HasProperty | reduced to the detection limit
Facets:
Source sentences:
text: For this purpose, comfrey roots with low PA levels are used; moreover, in the course of the extraction procedure, the alkaloids are reduced to the detection limit.
text: For this purpose, comfrey roots with low PA levels are used; moreover, in the course of the extraction procedure, the alkaloids are reduced to the detection limit.