Cytochrome P450 isozyme protein verified in the skin of southern hemisphere humpback whales (Megaptera novaeangliae): Implications for biochemical biomarker assessment

► First detection of CYP1A1 in the integument of southern ocean humpback whales. ► Expression of CYP1A1 in both genders and at two time points during annual migrations. ► Expanding the repertoire of biochemical assessments possible via non-destructive methods.