Reprogramming following somatic cell nuclear transfer in primates is dependent upon nuclear remodeling

BACKGROUND: Somatic cell nuclear transfer (SCNT) requires cytoplast-mediated reprogramming of the donor nucleus. Cytoplast factors such as maturation promoting factor are implicated based on their involvement in nuclear envelope breakdown (NEBD) and prema

Fish Fauna Status in the Lugu Lake with PreliminaryAnalysis on Cause and Effect of Human Impacts

泸沽湖是位于滇西北的一个断陷湖泊，为滇川两省共有。文献记录泸沽湖原始的鱼类区系由4种鱼 类组成，隶属于裂腹鱼属和泥鳅属。于2001，2002和2004年3次考察泸沽湖，进行标本采集和鱼类区系现状调 查。查看了采自泸沽湖的鱼类标本518号，结合历史上的采集记录和大量相关文献，确定泸沽湖记录有鱼类12 种，隶属于3目4科10属；过度捕捞和毁林造成的泥石流是泸沽湖鱼类区系变化的主要原因。

XDistribution and Length2weight Relationships of Glyptosternoid Fishes in the Drung River Basin , Yunnan

鱼类主要分布于青藏高原周边, 是一群适合于急流生活的　科鱼类。在独龙江流域7 个点共采 集271 号　　鱼类标本(隶属　属、　属和异齿　属) , 结合各采集点数据绘制大鳍异齿　、藏　和扁头　的分布 直方图, 结果显示, 藏　( E. labiatum) 在流速较快的独龙江下游各采集点的种群数量较上游高, 更适应急流生 境。同时研究了这3 种　　鱼类的体长与体重的关系, 参数b (W = aLb) 的范围在218201 和310131 之间, 均为异 速生长; 藏　的生长类型最接近等速生长。

Schistura cryptofasciata, a new loach (Cypriniformes : Balitoridae) from Salween drainage in Yunnan, Southwestern China

Schistura cryptofasciata is distinguished from its congeners by following combination characters: lateral line complete; 8(1)/(2) branched dorsal-fin rays; 9+8 branched caudal-fin rays; no sexual dimorphism; 8-11 indistinct bars, wider than interspaces; caudal-peduncle length 44.1-16.5% standard length, 68.1-90.4% dorsal head length; anterior portion of body scaleless; air bladder entirely embedded in bony capsule; lateral head length 104-122% dorsal head length; lower jaw with a notch at symphysis; lower lip completely interrupted; interorbital width 1.9-2.2 times eye diameter; pelvic-fin origin ventral to dorsal-fin origin; anus 1.0-1.5 eye diameters in front of anal-fin origin; the widest part of black basal caudal bar is the midlateral, and then the upper and lower ends.

Two new species of the sisorid genus Oreoglanis Smith from Yunnan, China (Teleostei : Sisoridae)

Two new species of the genus Oreoglanis, O. jingdongensis and O. immaculatus are described from the Mekong and Salween River basins, respectively, of Yunnan Province, China. Oreoglanis jingdongensis can be distinguished from other Oreoglanis species by th