Nitric Oxide Synthase Enzymes in the Airways of Mice Exposed to Ovalbumin: NOS2 Expression Is NOS3 Dependent

Figure 10

PAS staining of 5 $\mu$m-thick left lobe lung sections from (a) C57Bl/6 filtered air-exposed, (b) C57Bl/6 OVA-exposed, (c) NOS1${}^{-/-}$ OVA-exposed, and (d) NOS3${}^{-/-}$ OVA-exposed mice. Images were taken at 400$\times$ magnification.

(a)

(b)

(c)

(d)