National Center for Biotechnology Information NCBI NLM MEDLINE Mice animals humans pubmed abstract nih national institutes of health national library of medicine research support non-u.s. gov't female N.I.H. Extramural cell line particle size osmolar concentration hydrogen-ion concentration cell survival / drug effects feces / chemistry tissue distribution porosity silicon dioxide / chemistry pmid:31465825 pmc6874921 doi:10.1016/j.jconrel.2019.08.028 seyyed pouya hadipour moghaddam raziye mohammadpour hamidreza ghandehari aorta / cytology endothelial cells / drug effects gastric juice / chemistry intestinal secretions / chemistry lysosomes / chemistry nanoparticles / administration & dosage* nanoparticles / chemistry nanoparticles / toxicity silicon dioxide / administration & dosage* silicon dioxide / toxicity silicon dioxide / urine