Supplementation of selenium enhances protein levels of mitochondrial biogenesis markers, PGC-1α and NRF1, in the nuclear fractions.

<p><i>Upper panel</i>, representative Western blot bands. <i>Lower panel</i>, summarized bar graphs show band intensity presented as ratio of targeting protein over actin. Values are means±s.d. * p<0.05 and **p<0.01 by <i>t</i>-test.