Discovery of markers for discriminating the age of cultivated ginseng by using UHPLC-QTOF/MS coupled with OPLS-DA.

Background: Ginseng (Ginseng Radix et Rhizoma, Panax ginseng C.A. Meyer) is gaining more publicity in modern society due to its health benefit and huge value in market.

Purity assessment of ginsenoside Rg1 using quantitative H nuclear magnetic resonance.

Ginseng herbs comprise a group of the most popular herbs, including Panax ginseng, P. notoginseng and P. quinquefolius (Family Araliaceae), which are used as traditional Chinese medicine (TCM) and are some of the best-selling natural products in the world.

[Pilot observation on the effect of integrated control measures against clonorchiasis in Pengjiang District of Jiangmen City].

From June to December in 2008, five villages were randomly chosen from Pengjiang District of Jiangmen city and about five hundred residents from each village were examined for clonorchiasis by Kato-Katz method (three slides per specimen). Fifty residents from each village were re-examined one month after treatment. One year later 50 treated residents were chosen from Dalin village and Sanya village for fecal examination.

[Isolation, identification and sequence analyses of dengue virus type 2 strain GD19/2001].

Objective: To identify the virus isolated from Jiangmen, Guangdong province and to discuss the possible origin.

Methods: Using characteristics of indirect fluorescent antibody tests (IFA), reverse transcription-polymerase chain reaction (RT-PCR), mouse neurovirulence and cell culture to identify the isolated virus. According to the nature of dengue virus type 2 NGC strain, two pairs of primers were designed.