For most environmental pollutants , <*> experimental data are lacking ,
including perchloroethylene ( PERC ) ,
For most environmental pollutants , including perchloroethylene ( PERC ) , experimental data are lacking , resulting in default assumptions being used to account for variability in toxicokinetics and toxicodynamics .
For most environmental pollutants , including perchloroethylene ( PERC ) , experimental data are lacking , resulting in default assumptions being used to account for variability in toxicokinetics and toxicodynamics .