Are you planning to attend Particles & Health 2o21 (Home | Particles & Health 2020 (particlesandhealth.org))? This conference focusses again on the PSLT issue but this time in a broader context, and at the same time tries to point at the current consequences of (STOT) classification under current OECD guidance for particles. Check out the program and register for online or (limited) in-person attendance..