MMTV‐ErbB2 mice serve as a clinically relevant model with features closely resembling human pathology.[49] These mice spontaneously develop mammary tumors after a prolonged latency period.[50] To determine whether the recovery of MTA metabolism antagonized the effect of Cd exposure in vivo, we subjected MMTV‐ErbB2 mice to diverse treatment regimens (Figure6A). The gene discussed is ERBB2; the disease is breast cancer.