Fig. 1From: Grouping MWCNTs based on their similar potential to cause pulmonary hazard after inhalation: a case-studyAdapted from [7]Integrated Approach to Testing and Assessment (IATA) to test the GRACIOUS pre-defined grouping hypothesis: Respirable, biopersistent, rigid HARN: Following inhalation exposure, long-term pulmonary retention of HARN can occur resulting in lung toxicity. Back to article page