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Figure 3 | Respiratory Research

Figure 3

From: Thiolated chitosan nanoparticles enhance anti-inflammatory effects of intranasally delivered theophylline

Figure 3

Histological analysis of mouse lung sections after theophylline treatment: (a) negative control, (b) untreated (OVA-challenged), (c) unmodified ('pure') chitosan nanoparticles, (d) Thiolated chitosan, (e) theophylline, (f) theophylline plus unmodified chitosan nanoparticles, (g) theophylline plus TCNs. On day 22, lungs were removed, sectioned and stained with hematoxylin/eosin. Examination of tissue sections was performed by different persons in a blinded fashion. The results of a representative experiment of 3 slides for each section are shown.

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