The European Centre for Ecotoxicology and Toxicology of Chemicals (ECETOC) Nano Task Force published an article in Regulatory Toxicology and Pharmacology entitled “A decision-making framework for the grouping and testing of nanomaterials (DF4nanoGrouping).” The DF4nanoGrouping consists of three tiers to assign nanomaterials to four main groups, to perform sub-grouping within the main groups,…