NFE2L2 and cancer: Our results deviated from other experimental tumorigenesis models in non-pulmonary tissues (e.g., gallbladder, liver, stomach, colon, esophagus, skin, head/neck, prostate, bladder, mammary) where tumors or cancers were increased in Nrf2-/- mice relative to Nrf2+/+ mice [19], [20], [21], [22], [23], [24], [25], [26], [27], [28].