Fig. 1From: Agglomeration of titanium dioxide nanoparticles increases toxicological responses in vitro and in vivoRepresentative TEM micrographs of freshly prepared TiO2 stock suspensions of small (SA) and large agglomerates (LA). 17 nm-SA (a), 17 nm-LA (b), 117 nm-SA (c) and 117 nm-LA (d)Back to article page