Methods Replicated the hypothyroid rat model with propylthiouracil (PTU),and then detected the positive cells of PCD in sections by TdT-mediated dUTP nick end labeling.

• 方法 用丙基硫氧嘧啶（ P T U）复制甲状腺功能低下的大鼠动物模型，然后用原位末端标记方法检测 P C D 阳性细胞。