Assertion: enzyme | /r/Desires | some effort
Facets:
value: on the part of the investigator
type: OTHER
Source sentences:
text: These substances can be usually removed by dialysis, dilution, Sephadex filtration, ultrafiltration, or gel filtration but these methodologies have not been well validated for all enzymes in all species and it may require some effort on the part of the investigator to determine the need and optimal method for sample preparation.