on postnatal day 28 of Nrf2+/+ (A,B) or Nrf2−/− (C,D) mice. Three adducts are clearly visible (1,2,3) in A and C, while only two adducts are visible in B and D. The insets show total nucleotides for each TLC plate, with the total nucleotides for the Nrf2+/+ ovary on the left and the Nrf2−/− ovary on the right. 32P-postlabeling and TLC of A and C were performed on the same day and B and D were performed on a different day.