1. The invention relates to a method and a model for separating senescent cells, belonging to the biotechnology and cell biology fields. 本发明属于生物技术和细胞生物学领域，涉及分离衰老细胞的方法和模型。
2. As to the different parts of the plant in filling stage, the lower senescent stems and leaves volatilized more ammonia than the upper normally growing ears and flag leaves. 同一植株不同部位的挥发量相差很大，下部衰老茎叶的氨挥发量明显高于生长正常的上部穗和旗叶。
3. Methods:The senescent mice induced by D-galactose, SDH and LDH, LPF were detected by the histochemical method, and the histological changes were synchronously observed by electronic microscope. 方法：D-半乳糖制作小鼠衰老模型，组织化学方法观察小鼠脑组织琥珀酸脱氢酶（SDH）、乳酸脱氢酶（LDH）、脂褐素（LPF）的变化，同步观察电子显微镜下的组织学变化。
