Yuhong Zheng

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BACKGROUND Human embryonic stem cell (hESC) lines derived from poor quality embryos usually have either normal or abnormal karyotypes. However, it is still unclear whether their biological characteristics are similar. METHODS Seven new hESC lines were established using discarded embryos. Five cell lines had normal karyotype, one was with an unbalanced(More)
BACKGROUND Epstein-Barr virus capsid antigen immunoglobulin A (EBV VCA-IgA) exerts an important role in the diagnosis of nasopharyngeal carcinoma (NPC). This meta-analysis aimed to evaluate the pooled diagnostic performance of VCA-IgA for NPC. METHODS Literature fulfilling the criteria was searched in PubMed and Embase databases. The quality of the(More)
Poor quality embryos discarded from in vitro fertilization (IVF) laboratories are good sources for deriving human embryonic stem cell (hESC) lines. In this study, 166 poor quality embryos donated from IVF centers on day 3 were cultured in a blastocyst medium for 2 days, and 32 early blastocysts were further cultured in a blastocyst optimum culture medium(More)
PURPOSE To examine the relationship between negative life events, coping styles, and symptoms of post-traumatic stress disorder (PTSD) among adolescent survivors exposed to 2008 Wenchuan Earthquake, China. METHODS A survey was conducted in a sample of 2250 adolescent students from two schools in Dujiangyan District, a seriously damaged area, 20 kilometers(More)
BACKGROUND Long non-coding RNAs (lncRNAs) are highlighted as novel cancer biomarkers with great promise. Herein, we focused on summarizing the overall diagnostic performance of lncRNAs for gastric cancer (GC). METHODS Publications fulfilling the search criteria were selected from the online databases. Study quality was assessed according to the Quality(More)
A new Open Artwork System Interchange Standard (OASIS) has been recently proposed for replacing the GDSII format. A primary objective of the new OASIS format is to enhance the compressibility of layout data. We compare the data compression capability of the Full OASIS set of operators with those also present in GDSII, which we refer to as the Restricted(More)
To assess the genetic and epigenetic status of parthenogenetic human embryonic stem cells (phESCs). Cytogenetics, X chromosome inactivation (XCI) and gene expression patterns were analyzed in one phESC line (FY-phES-018) that was derived from our laboratory. FY-phES-018 cells displayed the classical characteristics of normal hESCs. These cells had a 46, XX(More)
The genus Lycoris, a group of Amaryllidaceae plants distributed in temperate regions of Eastern Asia, is already known for containing representative alkaloids typical of this botanical family with a wide range of biological activities (for example, lycorine and galanthamine). In the present work, the alkaloid profiles of nine species, L. albiflora, L.(More)
Control of variability and performance in the back end of the VLSI manufacturing line has become extremely difficult with the introduction of new materials such as copper and low-k dielectrics. To improve manufacturability, and in particular to enable more uniform chemical-mechanical planarization (CMP), it is necessary to insert area fill features into(More)