地厉螨属一新种(蜱螨亚纲,厉螨科)

记述地厉螨属Dipolaelaps Zemskaya et Piontkovskaya,1960一新种:同心地厉螨Dipolaelaps tongxinensis Baiet Lu,sp.nov.,标本采自宁夏回族自治区同心县阿拉善黄鼠Citellus alaschanicus Buchner,1888巢穴内.模式标本均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和宁夏回族自治区疾病预防控制中心.     

宁夏革螨二新种记述(蜱螨亚纲,革螨股)

记述厉螨科Laelapidae Berlese地厉螨属Dipolaelaps Zemskaya et Piontkovskaya,19601新种:顾氏地厉螨Dipolaelaps guyimingi Bai,Yan et Wei,sp.nov.和裂胸螨科Aceosejidae Sellnick肛厉螨属Proctolaelaps Berlese,19231新种:六盘山肛厉螨Proctolaelaps liupanshanensis Bai,Yan et Qi,sp.nov.,标本采自宁夏六盘山自然保护区,模式标本保存于军事医学科学院微生物流行病研究所昆虫标本馆(北京)。     

青海省厉螨属一新种(蜱螨亚纲:厉螨科)

记述厉螨属Laelaps Koch,1836一新种,即匙形厉螨Laelaps cochlearis sp.nov.新种与近似种敏捷厉螨L.agilis Koch,1836进行了比较,标本采自青海省民和县古鄯林场的大林姬鼠Apodemus speciosus。     

青海血厉螨属一新种(蜱螨亚纲,厉螨科)

记述厉螨科Laelapidae血厉螨属Haemolaelaps Berlese,1910一新种,长棒血厉螨,Haemolaelaps longirodus sp.nov..标本采自青海省黄南州同仁县红耳鼠兔体上,保存于青海省地方病预防控制所.文内测量单位均为μm.     

广厉螨属一新种(蜱螨亚纲,厉螨科)

记述厉螨科Lealapidae Berlese,1892广厉螨属Cosmolaelaps Berlese,1892 1新种,即网纹广厉螨Cosmolaelaps retirugi sp.nov..标本采自青海省西宁市湟中县总寨地区褐家鼠Rattus norvegicus体上.模式标本存放在青海省地方病预防控制所,文内测量单位均为μm.     

西藏自治区地厉螨属一新种(蜱螨亚纲:厉螨科)

本文记述了采自西藏聂拉木县樟木镇的革螨一新种－薄片地厉螨Ｄｉｐｏｌａｅｌａｐｓ ｈｉｓｔｉｓ ｓｐ．ｎｏｖ．模式标本保存于成都军区后勤部卫生防疫队。     

青海下盾螨属一新种记述(蜱螨亚纲,厉螨科)

记述厉螨科Lealapidae Berlese,1892下盾螨属Hypoaspis Canestrini,18851新种,即卵形下盾螨Hypoaspis ovatus sp.nov。标本采自青海省湟中县总寨地区灰仓鼠Cricetulus migratorius体上,模式标本存放在青海省地方病预防控制所,文内测量单位均为μm。     

青海真厉螨属一新种(蜱螨亚纲,中气门目,厉螨科)

记述我国真厉螨属一新种,即高原真厉螨Eulaelaps plateau sp.nov..新种近似于厩真厉螨Eulaelaps stabularis Koch,1836和拟厩真厉螨E.substabularis Yang et Gu,1986,模式标本采自青海省久治县和河南县的根田鼠Microtus oeconomus体外.     

宁夏血厉螨属一新种记述：蜱螨亚纲：厉螨科

本文记述采自宁夏海原县的血厉螨属１新种：脆弱血厉螨Ｈａｅｍｏｌａｅｌａｐｓｆｒａｇｉｌｉｓ,ｓｐ．ｎｏｖ。模式标本保存于宁夏回族自治区地方病防治所。     

中国土厉螨属一新种（蜱螨亚纲：厉螨科）

本文记述中国土厉螨属１新种,王氏土厉螨Ｏｌｏｌａｅｌｅｐｓｗａｎｇｉ,ｓｐ．ｎｏｖ,新种的模式标本保存在宁夏回族自治区地方病防治所。     

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.