中国西南地区蠛蠓属四新种描述（双翅目：蠓科）

本文描述了采自中国西南地区的蠛蠓属Ｌａｓｉｏｈｅｌｅａ４新种,分别是采自四川的细小蠛蠓Ｌ．ｐａｒｖｉｔａｓｓｐ．ｎｏｖ,竹林蠛蠓Ｌ．ｂｏｍｂｕｓａ,ｓｐ．ｎｏｖ采自云南的山栖蠛蠓Ｌ．ｏｒｅｉｔａ,ｓｐ．ｎｏｖ．及采自西藏的孟氏蠛蠓Ｌ．ｍｅｎｇｉ,ｓｐ．ｎｏｖ。模式标本保存于北京医学昆虫标本馆。     

吉林省铗蠓属一新种：双翅目：蠓科

本文记述铗蠓属蠛蠓亚属吸血蠓一种新种,浑江铗蠓Ｆｏｒｃｉｐｏｍｙｉａ（Ｌａｓｉｏｈｅｌｅａｈｕｎｊｉａｎｇｅｎｓｉｓｓｐ．ｎｏｖ．,描述了成蠓的形态,并与近似种作鉴别比较。     

尼泊尔蠛蠓新种描述(双翅目 :蠓科)(英文)

本文描述了尼泊尔蠛蠓新种的两性成虫的形态特征 ,以其纤长的口甲齿和宽而尖的雄性阳茎中叶为主要特征。但其口甲齿与发现于马来西亚的细齿蠛蠓 (LasioheleatenuidentisYuandWirth)很相像 ,而该蠓触须无感觉器窝 ,受精囊褐色 ,圆形 ,明显不同。     

中国蠓科(双翅目)一新种及三新纪录种记述

记述了毛蠓属中国3新纪录种及蠛蠓属1新种,它们分别是:共同毛蠓Dasyhelea communis Kirffer、黄腹毛蠓Dasyhelea luteoventris Goetghebuer、黄色毛蠓Dasyhelea lutea Remm and Zhogolev和留坝蠛蠓Lasiohelea gubaensis Yu,Liu et Yan,sp.nov.,并首次描述了这3种新纪录毛蠓的蛹和幼虫特征.所有标本都存于医学昆虫标本馆.     

中国蠓科昆虫(双翅目)区系分布概况

至今已查知全国共有蠓类4亚科39属1011种。叙述了我国各省区已知蠓类及其区系分布概况,鄂豫交界地带是东洋界和古北界蠓类种群的交汇带。吸血蠓类中,细蠓多见于西北荒漠地区,蠛蠓是南方湿润地区的优势种群。库蠓种类繁杂,南北方各有不同优势种群,北方蠓类群落构成的种群较简单,而优势种突出。南方蠓类群落构成的种群复杂,优势种不很突出。     

四川省毛蠓属二新种：双翅目：蠓科

本文报导采自四川省的毛蠓二新种,即西部毛蠓Ｄ．ｏｃｃａｓｕｓ,ｓｐ．ｎｏｖ。和泸定毛蠓Ｄ．ｌｕｄｉｎｇｅｎｓｉｓ,ｓｐ．ｎｏｖ。新种的模式标本保存在北京医学昆虫标本馆。     

新疆天山毛蠓属二新种：双翅目：蠓科

本文报道采自新疆天山的毛蠓属Ｄａｓｙｈｅｌｅａ２新种,分别为天山毛蠓Ｄ．ｔｉａｎｓｈａｎａｓｐ．ｎｏｖ．和高山毛蠓Ｄ．ｍｏｎｔａｎｓｐ．ｎｏｖ。模式标本保存在北京医学昆虫标本馆。     

铗蠓属一新亚属及其二新种（双翅目：蠓科）

记述发现于我国的铗蠓属Ｆｏｒｃｉｐｏｍｙｉａ１新亚属－－奇蠓亚属Ａｔｏｐｏｍｙｉａ ｓｕｂｇ．ｎｏｖ．及其２新种：奇异铗蠓Ｆ．（Ａｔｏｐｏｍｙｉａ）ａｔｏｐｉａ,ｓｐ．ｎｏｖ．和山地铗蠓Ｆ．（Ａｔｏｐｏｍｙｉａ）ｉｄａｅｕｓ,ｓｐ．ｎｏｖ．。模式标本保存于北京医学昆早标本馆。     

中国异蠓族一新属（双翅目：蠓科）

本文描述了蠓科异蠓族的湿蠓新属Ｍｅｄｅｏｂｅｚｚｉａ,ｇｅｎ．ｎ．及其模式种孤单湿蠓Ｍｅｄｅｏｂｉｚｚｉａ ｓｉｎｇｕｌａｒｉｓ,ｓｐ．ｎ．。模式产地为湖北省武当山麓,收藏于军事医学科学院医学昆虫标本馆。     

武夷山发现蠓类新种

中科院院士、中国蠓类权威专家虞以新教授日前在武夷山自然保护区发现并命名了一个蠓类新种———公东短蠓。虞以新教授此次共采获蠓类6属:毛蠓属、裸蠓属、铗蠓属、蠛蠓属、短蠓属和库蠓属。其中1种是原产于巴基斯坦的巴国短蠓,这是中国首次发现;1种为新种,被命名为公东短蠓。     

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.