Figure 5: Quantitation of MFBs by alpha-SMA expression level. The Western blotting picture revealed that alpha-SMA expression level was increased in three representative BOOP cases (pigs) (a). The quantitative data were assayed from five cases (six lung sections in each case). Significant elevation of -SMA expression in BOOP group was revealed ( ) (b). versus normal group ( , six replicates in each individual BOOP or normal pig).