毛绥螨属一新种和中国二新记录种：蜱螨亚纲：囊螨科

本文民述囊螨科Ａｓｃｉｄａｅ毛绥螨属Ｌａｓｉｏｓｅｉｕｓ Ｂｅｒｌｅｓｅ,１９１６的１新种－中国毛绥螨Ｌａｓｉｏｓｅｉｕｓ ｓｉｎｅｎｓｉｓ ｓｐ．ｎ。及中国２新记录种－细孔毛绥螨Ｌ．ｐｏｒｕｌｏｓｕｓ Ｄｅ Ｌｅｏｎ与茸毛绥螨Ｌ．ｌａｓｉｏｄａｃｔｙｌｉ Ｉｓｈｉｋａｗａ。新种模式标本保存于沈阳农业大学植物保护系。     

中国囊螨属一新种：蜱螨亚纲：囊螨科

本文记述囊螨属Asca V.Heyden的一个新种中华囊螨Asca sinica sp.nov.,其特征:前后背板刚毛除S_8外,其它均呈镰状或桨状;St_1位于胸板外,胸扳前缘与第1对隙孔近平直;生殖板之后具一长的小骨片;腹肛板前缘略凸,周肛毛6对,最后2对镰状。模式标本采自宁夏回族自治区海原县,蚂蚁Myrmos sp.洞道及巢穴内,保存于宁夏回族自治区地方病防治所。     

新囊螨雄螨和云囊螨成螨前各期描述(蜱螨亚纲:中气门目:胭螨科)

描述新囊螨(Asca novaW illm ann,1939)雄螨和云囊螨(Asca nubesIsh ikawa,1969)成螨前各期。     

角绥螨属在中国首次发现及一新种记述（蜱螨亚纲：囊螨科）

本文记述角绥螨属一新种,中华角绥螨Ａｎｔｅｎｎｏｓｅｉｕｓ ｓｉｎｉｃｕｓ ｓｐ．ｎｏｖ．,标本采自云南剑川县大绒鼠巢中。该属在中国尚系首次发现。     

宁夏毛绥螨属一新种：蜱螨亚纲：囊螨科

本文记述采自宁夏角川市郊柳树寄生多孔菌体上的毛绥螨属１新种－殷氏毛绥螨Ｌａｓｉｏｓｅｉｕｓ ｙｉｎｉ,ｓｐ．ｎｏｕ。,模式标本保存在宁夏回族自治区地方病防治所和沈阳农业大学。     

革赛螨属和囊螨属新种记述及囊螨属已知种补充描述(蜱螨亚纲,中气门目,胭螨科)

记述革赛螨属一新种:细毛革赛螨Gamasellus leptinochaetus sp.nov.和囊螨属一新种:拟异囊螨Asca subidiobasis sp.nov.,并对异基囊螨Asca idiobasis Gu et Guo,1997,安氏囊螨Asca anwenjui Ma,2003和拟巨囊螨Asca submajor Ma,2003进行补充描述.     

中国副肛厉螨属一新种（蜱螨亚纲：囊螨科）

本文记述副肛厉螨属一新种－中卫副肛厉螨Ｐａｒａｐｒｏｃｔｏｌａｅｌａｐｓ ｚｈｏｎｇｗｅｉｅｎｓｉｓ ｓｐ．ｎｏｖ．,模式标本采自宁夏、中卫县,存于宁夏回族自治区地方病防治所。     

囊螨属五新种记述(蜱螨亚纲,中气门目,胭螨科)

记述囊螨属5新种:山东囊螨Asca shandongensis Ma et Lin,sp.nov.,福建囊螨Ascafujianensis Ma et Lin,sp.nov.,云南囊螨Asca yunnanensis Ma et Zhang,sp.nov.,海南囊螨Asca hainanensis Ma et Lin,sp.nov.和拟云囊螨Ascaimitonubes Ma et Lin,sp.nov.。     

长白山地区囊螨科二新种(蜱螨目:囊螨科)

我们在长白山采到囊螨科(Ascidae)2新种,它们分隶于滑绥螨属Leioseius Berlese,1918及手绥螨属Cheiroseius Berlese,1916,现记述如下。标本测量均以微米计。模式标本保存于沈阳农业大学植保系。1.长白滑绥螨Leioseius changbaiensis新种     

宁夏角绥螨属一新种(蜱螨亚纲,囊螨科)

记述囊螨科Ascidae角绥螨属Antennoseius Berlese,1916一新种,宁夏角绥螨Antennoseius ningxiaensis sp.nov..标本采自宁夏回族自治区中卫县红泉乡蚂蚁Myrmos sp.巢穴内,保存于军事医学科学院微生物流行病研究所医学昆虫标本馆.文内测量单位均为μm.     

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.