F Immunohistochemical staining of UQCRC2 was performed on liver, heart and kidney derived from wild-type and Uqcrh-/- mice at 9 weeks of age. Staining of VDAC1/porin was also carried out G Graphs indicate score values of immunohistochemical staining intensity of both VDAC1/porin and UQCRC2. Data are given as mean ± SEM. * p < 0.05; n = 3, Student's t-test (unpaired samples). 