Assertion: stemona alkaloid | /r/HasProperty | tested for their activity
Facets:
value: against the nematode
type: TRANSITIVE-OBJECT
Source sentences:
text: In a more recent investigation twenty-five Stemona alkaloids were isolated from the roots of S. parviflora, collected in Hainan island in China, and tested for their activity against the nematode Panagrellus redivivus.