价格:399元技术支持:82628866-8222 多媒体视讯厂商朗视在国内成功的推出了LlyVideo(飞影)系列视讯卡之后,又于最近推出了其新一代产品——Ur.TV系列视频卡。Ur.TV系列按不同的市场的定位推出多种型号,最先上市的为Ur.TV Home editor和U...价格:399元技术支持:82628866-8222 多媒体视讯厂商朗视在国内成功的推出了LlyVideo(飞影)系列视讯卡之后,又于最近推出了其新一代产品——Ur.TV系列视频卡。Ur.TV系列按不同的市场的定位推出多种型号,最先上市的为Ur.TV Home editor和Ur.TVDVD,图片所示为Home editor。 Ur.TV系列视频卡拥有丰富的功能且更具性价比,采用目前最先进的第五代视频技术。同FlyVideo系列电视卡一样,朗视Ur.TV系列同样采用PHILIPS713X视频芯片和“第五代精显技术”。展开更多
The method of laser capture microdissection (LCM) combined with suppressive subtractive hybridization (SSH) was developed to isolate specific germ cells from human testis sections and to identify the genes expressed d...The method of laser capture microdissection (LCM) combined with suppressive subtractive hybridization (SSH) was developed to isolate specific germ cells from human testis sections and to identify the genes expressed during differentiation and development. In the present study, over 10,000 primary spermatocytes and round spermatid cells were successfully isolated by LCM. Using the cDNAs from primary spermatocytes and round spermatids, SSH cDNAs library of primary spermatocyte-specific was constructed. The average insert size of the cDNA isolated from 75 randomly picked white clones was 500 bp, ranging from 250 bp to 1.7 kb. Using the dot-blot method, a total of 421 clones were examined, resulting in the identification of 390 positive clones emitting strong signals. Partial sequence of cDNAs prepared from each clone was determined with an overall success rate of 84.4%. Genes encoding cytochrome c oxidase II and the rescue factor-humanin were most frequently expressed in primary spermatocytes, suggesting their roles involved in meiosis.展开更多
文摘The method of laser capture microdissection (LCM) combined with suppressive subtractive hybridization (SSH) was developed to isolate specific germ cells from human testis sections and to identify the genes expressed during differentiation and development. In the present study, over 10,000 primary spermatocytes and round spermatid cells were successfully isolated by LCM. Using the cDNAs from primary spermatocytes and round spermatids, SSH cDNAs library of primary spermatocyte-specific was constructed. The average insert size of the cDNA isolated from 75 randomly picked white clones was 500 bp, ranging from 250 bp to 1.7 kb. Using the dot-blot method, a total of 421 clones were examined, resulting in the identification of 390 positive clones emitting strong signals. Partial sequence of cDNAs prepared from each clone was determined with an overall success rate of 84.4%. Genes encoding cytochrome c oxidase II and the rescue factor-humanin were most frequently expressed in primary spermatocytes, suggesting their roles involved in meiosis.
