Fig. 4From: Toxic and adjuvant effects of silica nanoparticles on ovalbumin-induced allergic airway inflammation in miceHematoxylin and eosin stain (H&E stain) and Periodic acid Schiff (PAS) stain was performed on lung sections of mice which exposed SNPs alone. 30 μl saline (a, e), 200 μg S-SNPs (b, f), 200 μg M-SNPs (c, g), 200 μg P-SNPs (d, h)Back to article page