Xiangjin Meng

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Hepatitis E virus (HEV) is transmitted by the fecal-oral route and causes sporadic and epidemic forms of acute hepatitis. Large waterborne HEV epidemics have been documented exclusively in developing countries. At least four major genotypes of HEV have been reported worldwide: genotype 1 (found primarily in Asian countries), genotype 2 (isolated from a(More)
Currently, killed-virus and modified-live PRRSV vaccines are used to control porcine reproductive and respiratory syndrome disease (PRRS). However, very limited efficacy of killed-virus vaccines and serious safety concerns for modified-live virus vaccines demand the development of novel PRRSV vaccines. In this report, we investigated the possibility of(More)
Porcine reproductive and respiratory syndrome (PRRS) is the most significant infectious disease currently affecting the swine industry worldwide. Several inactivated and modified live vaccines (MLV) have been developed to curb PRRSV infections. However, the efficacy and safety of these vaccines are unsatisfactory, and hence, there is a strong demand for the(More)
Porcine reproductive and respiratory syndrome (PRRS) is the most economically important infectious disease currently affecting the swine industry worldwide. In the US alone, it causes economic losses of more than 560 million dollars every year. Although killed-virus and modified-live PRRS vaccines are commercially available, the unsatisfactory efficacy and(More)
Porcine reproductive and respiratory syndrome (PRRS) virus is the causative agent of the most significant infectious disease currently affecting the swine industry worldwide. Density gradient ultracentrifugation remains the most commonly used method for porcine reproductive and respiratory syndrome virus (PRRSV) purification. However, this technique has(More)
The behavior ecology of copulation and oviposition of Apis cerana cerana Fab. was studied. The results showed that temperature influence on the cell-covered time of Apis cerana cerana queen and drone induced the remarkable difference in their newborn weight and mature time (P < 0.05). Queen and drone fly frequency for discerning cell was 1.23-1.31 and(More)
Porcine reproductive and respiratory syndrome virus (PRRSV) is the cause of an economically important swine disease that has been devastating the global swine industry since the early 1990s. The current PRRSV vaccines are not very effective largely due to heterogeneic nature of the virus. The major envelope protein, GP5, exposes outside the virion, induces(More)
  • X J Meng
  • Zhonghua zhong liu za zhi [Chinese journal of…
  • 1989
HPV DNA and HSV-2 antigens were detected in a series of cervical lesions by DNA hybridization and PAP stain techniques in order to investigate the possible role of HPV and HSV-2 in the viral etiology of cervical carcinoma. The correlation of HPV DNA sequence and HSV-2 antigens was analyzed. The results showed that the positive rates of HPV 16, 18 and 11 in(More)
Systematical observations and researches were conducted on the population size dynamics of Apis mellifera Ligustica Spi. and Apis cerana cerana Feb. in Wanzhong, Wanxi and Wannan mountainous area in Anhui Province in 1997-1999. The results showed that the bee population size was influenced by climate and flower fertility, which was higher in Spring and(More)
  • X J Meng
  • Zhonghua zhong liu za zhi [Chinese journal of…
  • 1989
Human cytomegalovirus (HCMV) DNA sequence and HCMV antigen were detected by dot blot hybridization and PAP staining in biopsy specimens from cervical lesions. The results showed that the positive rate of HCMV DNA sequence was 73% in cervical cancer and 73% in cervical dysplasia which were higher than that in chronic cervicitis (44%) (P less than 0.05). HCMV(More)
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