Sunflower originated in America was introduced into China in the middle of Ming dynasty and spread rapidly all over the country. First as ornamental and later dried nut, Sunflower then became an important oil plant. T...Sunflower originated in America was introduced into China in the middle of Ming dynasty and spread rapidly all over the country. First as ornamental and later dried nut, Sunflower then became an important oil plant. The introduction of sunflower, as well as its development, has accelerated the adjustment of China’s agricultural structure, which is one of the most significant activities during the history of agricultural exchanges between China and the outside world. This present paper has given a detailed analysis of the time and the path of sunflower’s introduction, as well as its condition of spread and evolution in China from the period of Ming and Qing dynasties to the time of Republic of China or even now. In addition,focuses on the motivation of its spread in China and its influence on China’s economy, society and culture.展开更多
采用光学显微镜法、透射电镜法、原位末端标记法和琼脂凝胶电泳方法观察黄连(RH IZOM ACOPT ID IS)提取物对地塞米松诱导的小鼠胸腺细胞凋亡的影响。空白对照组的胸腺细胞核染色质分布和形态学特征正常,凋亡对照组胸腺细胞数量显著减少...采用光学显微镜法、透射电镜法、原位末端标记法和琼脂凝胶电泳方法观察黄连(RH IZOM ACOPT ID IS)提取物对地塞米松诱导的小鼠胸腺细胞凋亡的影响。空白对照组的胸腺细胞核染色质分布和形态学特征正常,凋亡对照组胸腺细胞数量显著减少,黄连提取物组胸腺细胞与空白对照组相比无明显变化。原位末端标记显示凋亡对照组原位末端标记(TUNEL)阳性细胞数目多,凋亡指数为0.30±0.10,而空白对照组和黄连提取物组很少见TUNEL阳性细胞,凋亡指数仅为0.02±0.004和0.01±0.004。琼脂凝胶电泳显示凋亡对照组出现了典型的“梯状”条带,空白对照组和黄连提取物组未见梯状带。结果表明黄连提取物对地塞米松诱导的胸腺细胞凋亡有抑制作用。展开更多
文摘Sunflower originated in America was introduced into China in the middle of Ming dynasty and spread rapidly all over the country. First as ornamental and later dried nut, Sunflower then became an important oil plant. The introduction of sunflower, as well as its development, has accelerated the adjustment of China’s agricultural structure, which is one of the most significant activities during the history of agricultural exchanges between China and the outside world. This present paper has given a detailed analysis of the time and the path of sunflower’s introduction, as well as its condition of spread and evolution in China from the period of Ming and Qing dynasties to the time of Republic of China or even now. In addition,focuses on the motivation of its spread in China and its influence on China’s economy, society and culture.
文摘采用光学显微镜法、透射电镜法、原位末端标记法和琼脂凝胶电泳方法观察黄连(RH IZOM ACOPT ID IS)提取物对地塞米松诱导的小鼠胸腺细胞凋亡的影响。空白对照组的胸腺细胞核染色质分布和形态学特征正常,凋亡对照组胸腺细胞数量显著减少,黄连提取物组胸腺细胞与空白对照组相比无明显变化。原位末端标记显示凋亡对照组原位末端标记(TUNEL)阳性细胞数目多,凋亡指数为0.30±0.10,而空白对照组和黄连提取物组很少见TUNEL阳性细胞,凋亡指数仅为0.02±0.004和0.01±0.004。琼脂凝胶电泳显示凋亡对照组出现了典型的“梯状”条带,空白对照组和黄连提取物组未见梯状带。结果表明黄连提取物对地塞米松诱导的胸腺细胞凋亡有抑制作用。
