P19-06 Retrospective histopathology evaluation of respiratory tract tissues from two rat 90-day OECD 413 inhalation studies: Tobacco Heating System 2.2 versus Mentholated Tobacco Heating System 2.2 compared with conventional and mentholated reference cigarettes. (10th October 2018) - Oviedo, A.; Neves, P.F.; Wong, E.T.; Foong, C.; Vuillaume, G.; Sciuscio, D.; Peitsch, M.C.; Vanscheeuwijck, P.