Figure 4From: Cellular uptake and localization of inhaled gold nanoparticles in lungs of mice with chronic obstructive pulmonary disease Representative TEM image of AuNP aerosol. Morphology of freshly generated AuNP aerosol for inhalation collected on formvar-coated copper grids using a TEM particle sampler (University of Applied Sciences). The spherical shape was obtained after melting of AuNP in the airborne state by heat treatment at 600°C [28].Back to article page