Assertion: comfrey's alkaloid | /r/HasProperty | public health nutrition
Facets:
Source sentences:
text: Analysis of herbal teas made from the leaves of comfrey (Symphytum officinale): reduction of N-oxides results in order of magnitude increases in the measurable concentration of pyrrolizidine alkaloids” Public Health Nutrition, Cambridge University Press, CiteSeerX, The State University of Pennsylvania