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Fig. 2 | Particle and Fibre Toxicology

Fig. 2

From: Maternal exposure to ultrafine particles enhances influenza infection during pregnancy

Fig. 2

Pulmonary histopathology. Two histological slides from a longitudinal section from the lungs including the mainstem bronchi and both right and left side lung lobes were evaluated for each animal. Representative area of average scores is shown (photographed at 20X magnification). A Dam exposed to FA and inoculation with HI, showing no histological lesions (avg. score = 0). B Dam exposed to PM and inoculated with HI, showing no histological lesions (avg. score = 0.33). C Dam exposed to FA and inoculated with PR8, showing moderate perivascular and peribronchiolar lymphoplasmacytic, histolytic and neutrophilic inflammation denoted by arrows (avg. score = 1.66). D Dam exposed to PM and inoculated with live PR8, showing minimal numbers of peribronchial lymphocytes (avg. score = 0). E Pathological scoring of lungs in each exposure group

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