Fig. 4.
The process by which content from 3 public databases (EPA’s Substance Registry Services - SRS, NLM’s ChemID, and PubChem) was quality filtered, and either assigned to one of five qc_levels and sequentially loaded into the DSSTox_Core portion of the DSSTox_V2 data model in 2014 or rejected and placed in the Public_Untrusted bin, requiring further curation review along with other queued EPA lists.