Fig. 2. Graphical representation of the expression levels of proteins involved in sperm function (NDUFS1, UQCRC2, ATP1A4, ANXA2, and ACR) in spermatozoa samples obtained from fertile men (control) and men with non-seminoma testicular cancer (NSTC). Results are presented as fold change to control and expressed as mean±standard error of mean (n=6 for each condition). Significantly different results relative to control are indicated as: ^* for p<0.05; ^** for p<0.01; ^*** for p<0.001. Representative blots for each protein are also presented. NDUFS1: NADH-ubiquinone oxidoreductase 75 kDa subunit, UQCRC2: cytochrome b-c1 complex subunit 2, ATP1A4: sodium/potassium-transporting ATPase subunit alpha-4, ANXA2: Annexin A2, ACR: acrosin precursor.