Localization of unmodified and modified nanosilica in RAW 264.7 cells. RAW 264.7 cells were treated for 3 h with 100 μg/ml of fluorescent (green-F)-labeled nSP70 (a, b), nSP70-N (c), and nSP70-C (d) (green). The nucleus was counterstained using DAPI (blue). The original magnification of these photographs was × 63 (a) and × 100 (c, d). (b) is a magnified image of a portion of photograph (a).
Nabeshi et al. Nanoscale Research Letters 2011 6:93 doi:10.1186/1556-276X-6-93