1. An approximated one-quarter of IARC Group 3 (unclassifiable) chemicals fit more appropriately into IARC Group 4 (probably not carcinogenic). (17th April 2019) Authors: Smith, Carr J; Perfetti, Thomas A Journal: Toxicology research and application Issue: Volume 3(2019) Page Start: Record Type: Journal Article View Content: Available online (eLD content is only available in our Reading Rooms) ↗