眼镜王蛇神经毒素CM—11核磁共振氢谱谱峰的完全归属

眼镜王蛇抽提物ＣＭ－１１为含７２个残基的长链神经毒素,对其进行了ＤＱＦ－ＣＯＳＹ,ＴＯＣＳＹ和ＮＯＥＳＹ等一系列２Ｄ－ＮＭＲ谱测定,借助序列专一归属法完成了ＣＭ－１１ＮＭＲ氢谱的完整归属。     

辣薄荷草挥发油的化学成分

辣薄荷草挥发油的化学成分张荣,李承祜,苏中武（成都军区昆明总医洗药剂科,昆明６５００３２）（第二军医大学药学院,上海２００４３３）ＳＴＵＤＹＯＮＴＨＥＣＯＭＰＯＮＥＮＴＳＯＦＥＳＳＥＮＴＩＡＬＯＩＬＦＲＯＭＣＹＭＢＯＰＯＧＯＮＪＷＡＲＡＮＣＵＳＡ（Ｊ...     

云南漆树属一新种

云南漆树属一新种陈振峰，闵天禄（商业部西安生漆研究所，西安７１００６１）（中国科学院昆明植物研究所，昆明６５０２０４）关键词喙果漆ＡＮＥＷＳＰＥＣＩＥＳＯＦＴＨＥＧＥＮＵＳＴＯＸＩＣＯＤＥＮＤＲＯＮＦＲＯＭＹＵＮＮＡＮ￥ＣＨＥＮＺｈｅｎ－Ｆｅｎｇ１，...     

森林生态系统的生物地球化学循环：理论和方法

森林生态系统的生物地球化学循环：理论和方法黄建辉,韩兴国（中国科学院植物研究所北京１０００４４）ＡＲＥＶＩＥＷＯＮＴＨＥＢＣＯＧＥＯＣＨＥＭＩＣＡＬＣＹＣＬＩＮＧＩＮＦＯＲＥＳＴＥＣＯＳＹＳＴＥＭＳ：ＴＨＥＯＲＩＥＳＡＮＤＭＥＴＨＯＤＳＨｕａｎｇＪｉ...     

新雷公藤内酯四醇的研究

从雷公藤（Ｔｒｉｐｔｅｒｙｇｉｕｍ ｗ ｉｌｆｏｒｄｉｉＨｏｏｋ． ｆ．）的叶和根中分离到一个新的环氧二萜内酯化合物,据其理化性质,ＵＶ、ＩＲ、ＭＳ、１Ｈ－ＮＭＲ、１３Ｃ－ＮＭＲ、１３Ｃ－ＮＯＥ、２Ｄ－ＣＯＳＹ、２Ｄ－ＮＯＥＳＹ 和选择性远程ＤＥＰＴ谱等光谱数据分析,并结合分子图形学和分子力学计算确定了它的化学结构,命名为新雷公藤内酯四醇（ｎｅｏｔｒｉｐｔｅｔｒａｏｌｉｄｅ）． 该产物为首次从植物中分得的新化合物     

中国革螨二新纪录种（蜱螨亚纲：厉螨科、巨螫螨科）

中国革螨二新纪录种（蜱螨亚纲：厉螨科、巨螫螨科）ＴＷＯＮＥＷＬＹＲＥＣＯＲＤＥＤＳＰＥＣＩＥＳＯＦＧＡＭＡＳＩＮＡＦＲＯＭＣＨＩＮＡ（ＡＣＡＲＩ：ＬＡＥＬＡＰＩＤＡＥ,ＭＡＣＲＯＣＨＥＬＩＤＡＥ）￥ＹＥＲＵＩ－ＹＵ（ＸｉｎｊｉａｎｇＩｎｓｔｉｔｕｔｅ...     

太子参中新环肽—太子参环肽C

太子参中新环肽───太子参环肽Ｃ谭宁华,周俊（中国科学院昆明植物研究所植物化学开放实验室,昆明６５０２０４）ＨＥＴＥＲＯＰＨＹＬＬＩＮＣ,ＡＮＥＷＣＹＣＬＯＰＥＰＴＩＥＤＦＲＯＭＰＳＥＵＤＯＳＴＥＬＬＡＲＩＡＨＥＴＥＲＯＰＨＹＬＬＡ￥ＴＡＮＮｉｎｇ－...     

苏北麦田恶性杂草麦家公的生态习性研究

苏北麦田恶性杂草麦家公的生态习性研究钱希（江苏省国营黄海农场,响水县,２２４６２４）ＡＳＴＵＤＹＯＮＥＣＯＬＯＧＩＣＡＬＨＡＢＩＴＳＯＦＢＡＤＷＥＥＤＳＬＩＴＨＯＳＰＥＲＭＵＭＡＲＶＥＮＳＥＩＮＷＨＥＡＴＦＩＥＬＤＳＯＦＴＨＥＮＯＲＴＨＪＩＡＮＧＳＵ...     

荔枝胚胎发育的研究

荔枝胚胎发育的研究邱燕平,张展薇,丘荣熙（广东省农科院果树所,广州５１０６５０）（广东教育学院,广州５１０３０３）ＳＴＵＤＹＯＮＥＭＢＲＹＯＡＮＤＥＮＤＯＳＰＥＲＭＤＥＶＥＬＯＰＭＥＮＴＯＦＬＩＴＣＨＩＣＨＩＮＥＮＳＩＳＳＯＮＮ￥ＱｉｕＹａｎ－ｐｉｎ...     

云南雀梅藤属二新种

云南雀梅藤属二新种樊国盛（西南林学院林业系，昆明６５０２２４）陈书坤（中国科学院昆明植物研究所，昆明６５０２０４）ＴＷＯＮＥＷＳＰＥＣＩＥＳＯＦＴＨＥＧＥＮＵＳＳＡＧＥＲＥＴＩＡＦＲＯＭＹＵＮＮＡＮＦａｎＧｕｏｓｈｅｎｇ，ＣｈｅｎＳｈｕｋｕｎ（Ｄｅ...     

The early development of the tail and the transformation of the shape of the nucleus of the spermatid of the domestic fowl,Gallus gallus

Summary The differentiation of the spermatid, especially in reference to the formation of the flagellum, and transformation of the shape of the nucleus was investigated in the domestic fowl.In the early stage of the spermatid, a prominent Golgi apparatus appears around the centrioles. The Golgi vesicles then surround the axial-filament complex which develops from the distal centriole. These vesicles fuse to form continuous membrane at the earliest stage of flagellar formation, and in the succeeding stage Golgi lamellae are attached to the plasma membrane of the developing flagellum. From these observations, it is assumed that Golgi apparatus may be a source of the membrane system of the flagellum.The microtubules distributed around the nucleus form the circular manchette. The anterior region of the nucleus with the manchette is cylindrical in shape and the posterior region without it remains irregular in shape. When the circular manchette has been completed, the whole nucleus acquires a slender cylindrical shape. The circular manchette then changes into the longitudinal manchette. The nuclei of spermatids without a longitudinal manchette are abnormal in shape. In view of these observations it is assumed that the nuclear shaping of the spermatid may be accomplished by circular manchette and the maintenance of shape of the elongated nucleus by longitudinal manchette.The authors wish to thank Mr. Takayuki Mori for his helpful suggestions and technical advices     

Characteristics of the membranes of the pellicle of the ciliatePseudomicrothorax dubius

Summary The membranes of the pellicle of the ciliatePseudomicrothorax dubius are investigated using thin section electron microscopy and freeze-fracture replicas. The plasma membrane is covered by a surface coat and is connected to the outer alveolar membrane by short, sometimes branched, bridges. The inner alveolar membrane is coated on both sides. The epiplasm lies in intimate contact with the cytoplasmic surface of this membrane, and there is a corresponding deposit on the other surface. This deposit is regularly striated.The epiplasmic layer and the alveoli are interrupted at sites of cytotic activity,e.g., the attachment sites of trichocysts, the cytoproct, and the parasomal sacs. The striated deposit ends where the epiplasm ends, indicating a direct relationship between these two epimembranous layers.There is a deposit along the sides of the first part of the tip of the trichocysts, and in this region the trichocyst membrane is free of intramembranous particles.The membrane of the parasomal sacs has a coat on both surfaces. That on the extraplasmic surface is similar to the surface coat of the plasma membrane. The origin of the cytoplasmic coat is unknown. The cytotic activity of these sacs is indicated by their highly irregular profiles.     

Observations on the permeability of the choriocapillaris of the eye

Summary The choriocapillaris is a fenestrated capillary bed located posterior to the retinal pigment epithelium. It serves as the main source of supply to the photoreceptors, retinal pigment epithelium, and other cells of the outer retina. The permeability of these capillaries to intravenously injected ferritin (MW — approx. 480,000; mol. diam. 11 nm) was examined in the mouse, rabbit, and guinea pig, each of which is characterized by a different type of retinal vascularization. In all three species, the bulk of the ferritin remained in the capillary lumina, where it appeared to be blocked at the level of the diaphragmed fenestrae. Some ferritin was present in endothelial cell vacuoles. The results confirm previous work on the rat choriocapillaris and indicate that the barrier function of the choriocapillary endothelium is present even among species in which the retinal circulation differs significantly.Supported by NIH grant EY03418     

Separation of the pineal vesicle from the wall of the third ventricle during the post-hatching development of the chicken

Summary According to light- and electron-microscopic observations the pineal organ of the 3-day-old chicken consists of a prominent end vesicle and a tapering parenchymal stalk. During this stage the pineal lumen is in open communication with the third ventricle. However, in the 40-day-old chicken, which still possesses a well-developed end vesicle, the proximal portion of the pineal stalk displays regressive changes leading to local fragmentation. At this stage the pineal stalk is reduced, and the pineal lumen is missing. In 1-year-old chickens the parenchyma of the proximal portion of the stalk is further diminished, and in 3-year-old domestic fowl is completely displaced by bundles of collagenous fibers, only some nerve fibers being present. This post-hatching pineal development may reflect the sequence of changes leading from pineal sense organs to pineal glands.This work was supported by a grant-in-aid for Scientific Research from the Ministry of Education, Science and Culture of Japan