Figure 2.

Scanning electron microscopy. SEM reveals dense aggregates of foreign material with variable diameters (A, 3,000×), High magnification shows NP with a diameter between 31 and 67 nm (B, 200,000×).

Theegarten et al. Diagnostic Pathology 2010 5:77   doi:10.1186/1746-1596-5-77
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