Assertion: catechin's concentration | /r/HasProperty | indicated at the beginning of the assay
Facets:
Source sentences:
text: EGCg was added at the final concentrations indicated at the beginning of the assay and was present during the assay period.
text: EGCg was added at the final concentrations indicated at the beginning of the assay and was present during the assay period.  
text: EGCg was added at the final concentrations indicated at the beginning of the assay and was present during the assay period.
text: EGCg was added at the final concentrations indicated at the beginning of the assay and was present during the assay period.