西藏林芝真蚋亚属三新种（双翅目：蚋科）

本文记述西藏林芝真蚋亚属Ｅｕｓｉｍｕｌｉｕｍ三种：凸端真蚋Ｓｉｍｕｌｉｕｍ（Ｅｕｓｉｍｕｌｉｕｍ）ｃｏｎｃａｖｕｓｔｙｌｕｍｓｐ．ｎｏｖ．、林芝真蚋Ｓｉｍｕｌｉｕｍ（Ｅｕｓｉｍｕｌｉｕｍ）ｌｉｎｇｚｉｅｎｓｅｓｐ．ｎｏｖ．、裂缘真蚋Ｓｉｍｕｌｉｕｍ（Ｅｕｓｉｍｕｌｉｕｍ）ｓｃｈｉｚｏｌｏｍｕｎｓｐ．ｎｏｖ 。     

新疆蚋属一新种：（双翅目：蚋科）

本文记述新疆塔地区蚋属Ｓｉｍｕｌｉｕｍ特蚋亚属Ｔｅｔｉｓｉｍｕｌｉｕｍ一新种,塔城特蚋Ｓｉｍｕｌｉｕｍ（Ｔｅｔｉｓｉｍｕｌｉｕｍ）ｔａｃｈｅｎｇｅｎｓｅ ｓｐ．ｎｏｖ．。该种与Ｓ．（Ｔ．）ａｌａｊｅｎｓｅ ｈｉｅｍａｌｉｓ,Ｓ．（Ｔ．）ｋｏｚｌｏｖｉ和Ｓ．（Ｔ．）ｃｏａｒｃｌａｔｕｍ蚋种相似。     

新疆蚋属一新种（双翅目：蚋科）

本文记述新疆塔城地区蚋属Ｓｉｍｕｌｉｕｍ特蚋亚属Ｔｅｔｉｓｉｍｕｌｉｕｍ－新种,塔城特蚋Ｓｉｍｕｌｉｕｍ（Ｔｅｔｉｓｉｍｕｌｉｕｍ）ｔａｃｈｅｎｇｅｎｓｅｓｐ．ｎｏｖ。该种与Ｓ．（Ｔ．）ａｌａｊｅｎｓｅＳ．（Ｔ．）ａｌａｊｅｎｓｅｈｉｅｍａｌｉｓ,Ｓ．（Ｔ．）ｋｏｚｌｏｖｉ和Ｓ．（Ｔ．）ｃｏａｒｃｌａｔａｍ蚋种相似．     

贵州蚋属两种新记述：（双翅目：蚋科）

本文报道采自贵州的蚋属二新种：兴义维蚋Ｓｕｍｕｌｉｕｍ（Ｗｉｌｈｅｌｍｉａ）ｘｉｎｇｙｉｅｎｓｅ ｓｐ．ｎ８ｏｖ．和轮丝蚋Ｓｉｍｕｌｉｕｍ（Ｓｉｍｕｌｉｕｍ）ｒｏｔｉｆｉｌｉｓ ｓｐ．ｎｏｖ,分别描述了其形态特征,并与其近缘种相比较。模式标本存在于贵阳医学院生物学教研室。     

中国蚋属一新种：双翅目：蚋科

本文报道中国蚋属一新种,重庆蚋Ｓｉｍｕｌｉｕｍ（Ｓｉｍｕｌｉｕｍ）ｃｈｏｎｇａｉｎｇｅｎｓｅ ｓｐ．ｎｏｖ。标本采自重庆四面山,模式标本保存重庆市卫生防疫站。     

广东蚋科一新种（双翅目：蚋科）

本文描述了广东省揭阳地区蚋属（Ｓｉｍｕｌｉｕｍ）吉纳亚属（Ｇｎｕｓ）一新种：揭阳吉蚋Ｓ．（Ｇ．）ｊｉｅｙａｎｇｅｎｓｅｓｐ．ｎｏｖ．,作者对新种的形态特征进行了描述,并与近似种作了比较。     

辽宁蚋科一新种（双翅目：蚋科）

本文报道了采自辽宁新小溪真蚋亚属一新种,宽板真蚋Ｓｉｍｕｌｉｕｍ（Ｅｕｓｉｍｕｌｉｕｍ）ｅｕｒｙｐｌａｔａｍｕｓｓｐ．ｎｏｖ,对雌雄成虫、蛹和幼虫的形态进行了描述,并与近似种作了区别特征比较。     

西藏察隅蚋属一新种（双翅目：蚋科）

本文报道采自西藏察隅的蚋属一新种,根据足的颜色特征命名为淡股蚋Ｓｉｍｕｌｉｕｍ（Ｓｉｍｕｌｉｕｍ）ｐａｌｌｉｄｏｆｅｍｕｒｓｐ,ｎｏｖ．,描述了其雌虫和雄虫的形态。     

辽宁蚋科—新种（双翅目：蚋科）

本文报道采自辽宁新宾小溪真蚋亚属一新种,宽板真蚋Ｓｉｍｕｌｉｕｎｔ（Ｅｕｓｉｍｕｌｉｕｍ）ｅｕｒｙ－ｐｌａｔａｎｉｕｓｓｐ．ｎｏｖ,对雌雄成虫、蛹和幼虫的形态进行了描述,并与近似种作了区别特征比较。     

云南省蚋科一新种：双翅目：蚋科

本文报道云南省蚋科一新种：谭氏梯蚋Ｔｉａｎｏｐｔｅｒｙｘ ｔａｎａｅ ｓｐ．ｎｏｖ．。标本采自大理市郊一小溪中。新种雄虫的生殖腹板和雌虫的生殖叉突较近似于斯里兰卡的Ｓｉｍｕｌｉｕｍ（Ｂｙｓｓｏｄｏｎ）ｌａｎｇｕｉｄｕｍ Ｄａｖｉｅｓ ｅｔＧｙｏｒｋｏｓ,但其他特征有明显的不同。     

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.