title: Old materials, new challenges?
authors.affiliation: Risk Science Center, University of Michigan School of Public Health, 1415 Washington Heights, Ann Arbor, Michigan 48109, USA.
authors.forename: Andrew D
authors.initials: AD
authors.lastname: Maynard
mesh_terms: D000818:Animals; D005503:Food Additives / Q000737:chemistry / Q000378:metabolism / Q000633:toxicity*; D059022:Food Safety / Q000379:methods; D006801:Humans; D049329:Nanostructures / Q000737:chemistry / Q000633:toxicity* / Q000648:ultrastructure; D012822:Silicon Dioxide / Q000737:chemistry / Q000378:metabolism / Q000633:toxicity*
chemical_list: D005503:Food Additives; D012822:Silicon Dioxide