Assertion: ligand | /r/HasProperty | added in conventional methods
Facets:
value: often
type: TEMPORAL
Source sentences:
text: Also, in conventional methods, a ligand is often added in an amount not less than the amount of the ligand on the resin to secure an antagonistic effect, and this practice is a major problem of protein denaturation due to the presence of a ligand at a high concentration of several mg/ml in a biological material solution such as a lysate.