用高效液相色谱法测定鱼样中的维生素D3和E

用高效液相色谱法测定鱼样中的维生素Ｄ＿３和Ｅ徐立红,陈专,徐盈,张甬元（中国科学院水生生物研究所,武汉４３００７２）ＭＥＡＳＵＲＥＭＥＮＴＯＦＶＩＴＡＭＩＮＤ＿３ＡＮＤＶＩＴＡＭＩＮＥＯＦＦＩＳＨＳＡＭＰＬＥＳＢＹＨＰＬＣ￥ＸｕＬｉｈｏｎｇ,Ｃｈｅｎ...     

植物性细胞人工融合的研究进展

植物性细胞人工融合的研究进展周嫦（武汉大学生命科学学院，武汉４３００７２）ＡＤＶＡＮＣＥＳＩＮＲＥＳＥＡＲＣＨＯＮＦＵＳＩＯＮＯＦＰＬＡＮＴＲＥＰＲＯＤＵＣＴＩＶＥＣＥＬＬＳ￥ＺｈｏｕＣｈａｎｇ（ＤｅｐａｒｔｍｅｎｔｏｆＢｔｏｌｏｇｙ，ＷｕｈａｎＵｎ...     

二种不同抗冷性水稻品种剑叶5’－核苷酸酶的细胞化学定位

二种不同抗冷性水稻品种剑叶５’－核苷酸酶的细胞化学定位陈善娜邹晓菊梁斌（云南大学生物系，昆明６５００９１）ＴＨＥＣＹＴＯＣＨＥＭＩＣＡＬＬＯＣＡＴＩＯＮＯＦ５’－ＮＵＣＬＥＯＴＩＤＡＳＥＩＮＳＷＯＲＤＳＨＡＲＰＥＤＬＥＡＶＥＳＯＦＴＷＯＤＩＦＦＥＲ...     

小麦幼穗耐盐细胞无性系及后代农艺性状变异

小麦幼穗耐盐细胞无性系及后代农艺性状变异裴翠娟方仁李洪杰郭北海（河北省农林科学院粮油作物所，石家庄０５００３１）朱至清（中国科学院植物研究所，北京１０００９３）ＶＡＲＩＡＴＩＯＮＯＦＳＡＬＴＴＯＬＥＲＡＮＣＥＳＯＭＡＣＬＯＮＥＳＤＥＲＩＶＥＤＦＲＯ...     

被子植物核型胚乳细胞化机理研究的现状

被子植物核型胚乳细胞化机理研究的现状李师翁（庆阳师专生物系,甘肃西峰７４５０００）ＡＤＶＡＮＣＥＳＩＮＴＨＥＳＴＵＤＩＥＳＯＮＴＨＥＭＥＣＨＡＮＩＳＭＯＦＣＥＬＬＵＬＡＲＩＺＡＴＩＯＮＯＦＮＵＣＬＥＡＲＥＮＤＯＳＰＥＲＭＩＮＡＮＧＩＯＳＰＥＲＭＳＬｉ...     

CO2浓度倍增对小麦生育性状和产量构成的影响

ＣＯ_２浓度倍增对小麦生育性状和产量构成的影响王修兰,徐师华,李佑祥（中国农业科学院农业气象研究所,北京,１０００８１）ＴＨＥＥＦＦＥＣＴＳＯＦＣＯ_２ＤＯＵＢＬＩＮＧＯＮＧＲＯＷＩＮＧＡＮＤＤＥＶＥＬＯＰＩＮＧＣＨＡＲＡＣＴＥＲＳＡＮＤＹＩＥＬＤＦＯ...     

APPLICATION OF NONLINEAR FORECASTING METHOD TO ANALYSIS OF ISI IN NERVOUS SYSTEM

ＡＰＰＬＩＣＡＴＩＯＮＯＦＮＯＮＬＩＮＥＡＲＦＯＲＥＣＡＳＴＩＮＧＭＥＴＨＯＤＴＯＡＮＡＬＹＳＩＳＯＦＩＳＩＩＮＮＥＲＶＯＵＳＳＹＳＴＥＭＧｏｎｇＹｕｎｆａｎ（龚云帆）ＸｕＪｉａｎｘｕｅ（徐健学）（ＤｅｐａｒｔｍｅｎｔｏｆＥｎｇｉｎｅｅｒｉｎｇＭｅｃ...     

抗寒剂CR－4在克服我县水稻低温烂秧中的作用

抗寒剂ＣＲ－４在克服我县水稻低温烂秧中的作用赵玉华（甘肃高台县农业局７３４３００）ＥＦＦＥＣＴＯＦＴＨＥＰＬＡＮＴＣＯＬＤ－ＲＥＳＩＳＴＥＲＯＮＯＶＥＲＣＯ－ＭＩＮＧＲＩＣＥＳＥＥＤＬＩＮＧＤＥＣＡＹＩＮＬＯＷＴＥＭＰＥＲＡＴＵＲＥＳＴＲＥＳＳＩＮＯ...     

植物胚胎学实验方法（七）同时显示胚中贮藏的淀粉,蛋白质和脂类的永久制片法

植物胚胎学实验方法（七）同时显示胚中贮藏的淀粉、蛋白质和脂类的永久制片法胡适宜（北京大学生物系,北京１００８７１）ＭＥＴＨＯＤＯＦＰＲＥＰＡＲＡＴＩＯＮＯＦＳＬＩＤＥＳＦＯＲＳＩＭＵＬＡＮＥＯＵＳＤＥＭＯＮＳＴＲＡＴＩＯＮＳＯＦＳＴＡＲＣＨＧＲＡＩＮ...     

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受精过程中助细胞退化机理的研究进展杨弘远（武汉大学生物系,武汉４３００７２）ＲＥＣＥＮＴＡＤＶＡＮＣＥＳＩＮＲＥＳＥＡＲＣＨＯＮＴＨＥＭＥＣＨＡＮＩＳＭＯＦＳＹＮＥＲＧＩＤＤＥＧＥＮＥＲＡＴＩＯＮＤＵＲＩＮＧＦＥＲＴＩＬＩＺＡＴＩＯＮＰＲＯＣＥＳＳ￥...     

Recent advances in the study of Kaposi's sarcoma-associated herpesvirus replication and pathogenesis

It has now been over twenty years since a novel herpesviral genome was identified in Kaposi's sarcoma biopsies. Since then, the cumulative research effort by molecular biologists, virologists, clinicians, and epidemiologists alike has led to the extensive characterization of this tumor virus, Kaposi's sarcoma-associated herpesvirus(KSHV; also known as human herpesvirus 8(HHV-8)), and its associated diseases. Here we review the current knowledge of KSHV biology and pathogenesis, with a particular emphasis on new and exciting advances in the field of epigenetics. We also discuss the development and practicality of various cell culture and animal model systems to study KSHV replication and pathogenesis.     

The structure, reproduction and taxonomy of Vidalia and Osmundaria (Rhodophyta, Rhodomelaceae)

Comprises species occurring mostly in subtidal habitats in tropical, subtropical and warm-temperate areas of the world. An analysis of the type species, V. spiralis (Sonder) Lamouroux ex J. Agardh, a species from Australia, establishes basic characters for distinguishing species in the genus. These characters are (1) branching patterns of thalli, (2) flat blades that may be spiralled on their axis, (3) width of the blade, (4) primary or secondary derivation of sterile and fertile branchlets and (5) position of sterile and fertile branchlets on the thalli. Application of the latter two characters provides an important basic method for separation of species into three major groups. Osmundaria , a genus known only in southern Australia, was studied in relation to Vidalia , and its separation from the Vidalia assemblage is not accepted. Species of Vidalia therefore are transferred to the older genus name, Osmundaria. Two new species, Osmundaria papenfussii and Osmundaria oliveae are described from Natal. Confusion in the usage of the epithet, Vidalia fimbriala Brown ex Turner has been clarified, and Vidalia gregaria Falkenberg, described as an epiphyte on Osmundaria pro/ifera Lamouroux, is revealed to be young branches of the host, Osmundaria prolifera.     

New or rare chromosome counts in Artemisia L. (Asteraceae, Anthemideae) and related genera from Kazakhstan

Fifteen chromosome counts of six Artemisia taxa and one species of each of the genera Brachanthemum, Hippolytia, Kaschgaria, Lepidolopsis and Turaniphytum are reported from Kazakhstan. Three of them are new reports, two are not consistent with previous counts and the remainder are confirmations of very scarce (one to four) earlier records. All the populations studied have the same basic chromosome number, x = 9, with ploidy levels ranging from 2x to 6x. Some correlations between ploidy level, morphological characters and distribution are noted.     

肝癌中HBV和HCV基因和抗原的分布及意义

采用原位分子杂交方法检测HCV RNA及HBV X基因;采用免疫组织化学方法研究HCV核心抗原,非结构区C33c抗原及HBxAg在肝细胞肝癌中的定位及分布.结果表明(1)HCV RNA、HBV X基因在肝细胞肝癌组织检出率分别为40%(55/136)和82%(112/136).HCV RNA定位于癌细胞的胞浆内,阳性细胞呈散在、灶状及弥漫分布三种形式;HBV X基因在肝癌细胞中的分布呈胞浆型、核型及核浆型,阳性细胞也呈上述三种分布形式;(2)HCV C33c抗原、核心抗原在肝细胞肝癌中的阳性率为81%(133/164)及86%(141/164).C33c抗原定位于癌细胞及肝细胞的胞浆内;核心抗原既定位于癌细胞核中,又可定位于胞浆中.C33c抗原阳性细胞以灶状分布为主;而核心抗原阳性细     

Selection with two alleles and complete dominance

For a plant selection model with frequency-independent viabilities, fertilities and selfing rates, it is shown that apart from global fixation, for certain parameter combinations a protected polymorphism and facultative fixation (either allele may become fixed according to initial frequencies) may both occur. Facultative fixation requires different selling rates for the dominant and recessive type. Protection of the polymorphism requires resource allocation for male and female function. In this connection the problem of purely genetically caused population extinction is discussed.
For general frequency dependence and regular segregation, the chances for establishment of a completely recessive gene are compared to those of a completely dominant gene. It is proven that the process of establishment of the recessive gene, despite a fitness advantage, may be considerably endangered by drift effects if random mating prevails. The recessive gene may reach the same effectivity in establishment as a dominant gene, only if the recessive homozygote mates exclusively with its own type during the period of establishment.