Objective: To estimate directly phagocytic functions of the macrophages because of the importance in innate immunity, determine blood vessel density and re-innervation density which are basis of function. Methods: Eig...Objective: To estimate directly phagocytic functions of the macrophages because of the importance in innate immunity, determine blood vessel density and re-innervation density which are basis of function. Methods: Eighty adult Wistar rats were randonjy divided into experimental and control groups.The formers underwent splenotomy and a half splenie slice was transplanted into greater omentum. The latter only moved. After 6 months, examination was made as follows: ① After injection of 0.4% carbon particles by vein, spleme tissues were taken out at different times for estimating phagocytosis by light microscope. ② When splenic tissues had been intubated into left ventricle under total anesthesia, animals were perfused by formalin and India ink mixture suspension. Splenic tissues were taken out for making sections for measurement of area density of blood vessels.③ Immunohistochemical procedure was used for detecting neuropeptide Y(NPY). Results: Phagocytie functions had no difference between two groups, hut the area density of blood vessels and NPY-positive fibers re-dued (P<0.01) in experimental group. Conclusion:Autotransplanted splenic tissues show good innate immunity though regeneration of blood vessels and nerves do not reach normal level.展开更多
Bodies of plants are modularly organized. Development proceeds by adding new modules to open endings with a potential for branching. Each module is autonomous to some extent. Development relies on the self-organized p...Bodies of plants are modularly organized. Development proceeds by adding new modules to open endings with a potential for branching. Each module is autonomous to some extent. Development relies on the self-organized patterns that emerge from the interactions of individual modules. Interactions include both competition and cooperation,and several types of positive and negative feedback loops are involved. Development can be open to external influences, thus enabling the plant to adjust its form to the environment,for example, to the spatial distribution of ecological resources. This paper provides a review on adaptive plasticity in plants.展开更多
基金Supported by the Foundation for Sci & Tech Research Project of Chongqing, China (2003)
文摘Objective: To estimate directly phagocytic functions of the macrophages because of the importance in innate immunity, determine blood vessel density and re-innervation density which are basis of function. Methods: Eighty adult Wistar rats were randonjy divided into experimental and control groups.The formers underwent splenotomy and a half splenie slice was transplanted into greater omentum. The latter only moved. After 6 months, examination was made as follows: ① After injection of 0.4% carbon particles by vein, spleme tissues were taken out at different times for estimating phagocytosis by light microscope. ② When splenic tissues had been intubated into left ventricle under total anesthesia, animals were perfused by formalin and India ink mixture suspension. Splenic tissues were taken out for making sections for measurement of area density of blood vessels.③ Immunohistochemical procedure was used for detecting neuropeptide Y(NPY). Results: Phagocytie functions had no difference between two groups, hut the area density of blood vessels and NPY-positive fibers re-dued (P<0.01) in experimental group. Conclusion:Autotransplanted splenic tissues show good innate immunity though regeneration of blood vessels and nerves do not reach normal level.
基金This research was subsidized by the Hungarian National Research Fund(OTKA T35009,and NWOOTKA N34028),the Hungarian Ministry of Education(FKFP 0187/1990,Istvn Szchenyi Scolarship),and the International Program of the Santa Fe Institute,NM,USA.
文摘Bodies of plants are modularly organized. Development proceeds by adding new modules to open endings with a potential for branching. Each module is autonomous to some extent. Development relies on the self-organized patterns that emerge from the interactions of individual modules. Interactions include both competition and cooperation,and several types of positive and negative feedback loops are involved. Development can be open to external influences, thus enabling the plant to adjust its form to the environment,for example, to the spatial distribution of ecological resources. This paper provides a review on adaptive plasticity in plants.
