寄螨属一新种（蜱螨亚纲：寄螨科）

本文记述寄螨属一新种,保山寄螨标本采自云南省保山县的黄胸鼠体上,保存在南京大学医学院。     

寄螨属一新种（蜱螨亚纲：寄螨科）

本文报道寄螨属一新种,温氏寄螨Ｐａｒａｓｉｔｕｓｗｅｎｔｉｎｇｈｕａｎｉｓｐ．ｎｏｖ新种与ＰａｒａｓｉｔｕｓｂｅｔａＯｕｄｅｍａｎｓｅｔＶｏｉｇｔｓ。１９０４相似,１９６３年５月采自吉林省大安县舍力达乌尔黄鼠巢。     

寄螨属一新种三新纪录（蜱螨亚纲：寄螨科）

本文记述采自宁夏自治区的寄螨Ｐａｒａｓｉｔｕｓ Ｌａｔｒｅｉｌｌｅ共６种,其中奇盖寄螨Ｐ．ｍｉｒａｔｅｃｔｕｓ ｓｐ．ｎｏｖ．是未曾描述过的种类;甲虫寄螨Ｐ．ｃｏｌｅｏｐｔｒａｔｏｒｕｓ、甜菜寄螨Ｐ．ｂｅｔａ与透明寄螨Ｐ．ｈｙａｌｉｎｕｓ为国内首次纪录。前此,我国曾记录７种寄螨,至此已有１１种。     

吉林省寄螨亚科三新种记述（蜱螨亚纲：寄螨科）

本文报道在吉林省前郭尔罗斯蒙古族自治县的小家鼠巢内采到的寄螨科３新种，即邓氏寄螨Ｐａｒａｓｉｔｕｓ ｔｅｎｇｋｕｏｆａｎｉ ｓｐ．ｎｏｖ．、王氏寄螨Ｐａｒａｓｉｔｕｓ ｗａｎｇｄｕｎｑｉｎｇｉ ｓｐ．ｎｏｖ．和孟氏寄螨Ｐａｒａｓｉｔｕｓ ｍｅｎｇｙａｎｇｃｈｕｎａｅ ｓｐ．ｎｏｖ．。     

武汉革螨的新纪录及亲缘寄螨前若螨描述（蜱螨亚纲：革螨亚目：寄螨科）

记录在武汉采到的富生寄螨、亲缘寄螨和1种未定的厚厉螨,并描述亲缘寄螨前若螨。     

中国北方寄螨属亲缘种团的螨类（蜱螨亚纲：革螨股：寄螨科）

中国北方寄螨属亲缘种团已知有5种螨,即（1）季氏寄螨Parasitus tichomirovi Davydova,1971,(2)王氏寄螨Parasitus wangdunqingi Ma,1995,(3)短毛寄螨Parasitus brachychaetus Ma,1986,(4)乳突寄螨Parasitus mammilatus (Berlese,1904),(5)毛螨螨Parasitus setosus Oudemans et Voigts,1904.     

乳突寄螨雌螨描述(蜱螨亚纲: 革螨股: 寄螨科)

乳突寄螨 Parasitus mammillatus ( Berlese,1 90 4 )雌螨 ,在所查到的文献中 ,仅记载有生殖区、头盖和螯钳的形状 [1 ,2 ] ,无其它描述。国内根据丹东标本曾描述该螨雄螨和后若螨 [3] 。本文根据朝鲜标本详细描述其雌螨。文中测量单位为 μm,括号内为测量均值。图 1- 7　乳突寄螨 Parasitus mammillatus (Berlese)1.背面 ;2 .腹面 ;3.头盖 ;4 .螯钳 ;5 .颚角 ;6 .须肢 ;7.跗节 乳突寄螨 Parasitus mammillatus ( Berlese,1 90 4 )雌螨 (图 1 - 7)体黄色 ,卵圆形 ,长 71 2 - 793( 758) ,宽 4 0 2 - 483( 4 50 )。背板覆盖整个背面 ,前背…     

朝鲜寄螨属一新种(蜱螨亚纲:寄螨科)

报道寄螨属一新种：四毛寄螨采自朝鲜进口原木。模式标本存于全国鼠疫布氏菌防治基地,吉林省白城市。     

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.