Characterizations of the BNNS and BNNS–PEI complexes.Notes: (A) Dispersed BNNS and BNNS–PEI complexes in PBS after statically placed for 24 hours. (B) Hydrodynamic diameters distribution of BNNS and BNNS–PEI complexes in PBS.Abbreviations: BNNS, boron nitride nanospheres; PBS, phosphate-buffered saline; PEI, polyethyleneimine.
{}