Iron-sulfur cluster scaffold protein ISCU. (A and B) Western blot analysis of female lung lysates (A) showed unaltered protein levels of ISCU (B). (C and D) In contrast, in males, the levels of ISCU protein were found to be significantly increased in the HM group. Data are presented as mean ± SEM, n = 6–7, *P < 0.05 versus control, ANOVA.