Fig. 1. Morphologies of transmission electron microscopy (TEM) and particle size distributions of carbon black aerosols in nose-only inhalation chambers. (A) TEM morphologies of carbon black aerosols for group N (without sonication) and group S (with sonication). Images were taken at 10,000x magnification. (B) Particle size distributions of carbon black aerosols in nose-only inhalation chambers.