Assertion: antibody's use | /r/HasProperty | standard method
Facets:
value: for many years
type: TEMPORAL
value: before use
type: TEMPORAL
Source sentences:
text: Before the widespread availability and use of Protein A (rabbit) or Protein G (rodent) for the purification of IgG, the use of an ammonium sulfate “cut” was the standard method to isolate IgG and other serum proteins.
text: The use of rabbits in polyclonal antibody development has been standard practice for many years.