Investigation of the impact of CeO2 nanoparticles shape on their in vitro toxicity. Macrophages exposed to rod or octahedron/cube CeO2 nanoparticles. LDH release and TNF-α production significantly enhanced by rod-like nanoparticles. But not with cubic/octahedral nanoparticles Strong impact of CeO2 nanoparticle shape on their in vitro toxicity.