Figure 2

iNOS, nNOS and eNOS – IR in the cerebellar cortex of CO-exposed rats. Fig. (a), (a1), and (a2), shows elevated iNOS-IR (see arrows), in neurons of the 3 layers in group A, B and C. (a3), group D shows almost no iNOS IR. Fig. (b, b1, b2, and b3) shows nNOS-IR mainly in neuronal bodies in the P layer (see arrows). Group B shows decreased nNOS-IR in PCs, group A and C shows close to normal nNOS IR. (b3) group D shows normal nNOS-IR. Fig. (c), (c1), and (c2), shows eNOS-IR in blood vessels in groups A, B, and C, respectively. eNOS IR in the 3 CO-groups was similar and close to normal. (c3) group D shows normal eNOS IR. Hematoxylin (in purple color) identifies cell nuclei. Bar in Fig. a-a3, and b-b3 is 150 um. Fig. c-c3 bar is 35 um.