Shuang Chang

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Specific-pathogen-free (SPF) chickens were inoculated with the virus seed of an infectious bursal disease virus (IBDV)-attenuated vaccine, and positive reticuloendotheliosis virus (REV) antibody levels were subsequently detected in the chicken sera, indicating potential REV contamination of the vaccine. After neutralization with IBDV-positive blood serum,(More)
Dear Editor, Avian leukosis viruses (ALVs) can induce various tumors and cause production problems. Besides being a cause of mortality in poultry, ALV can mutate much easier than other avian viruses. ALVs isolated from chickens are divided into six subgroups (A–J) on the basis of the differences in the envelope glycoproteins. More recently, some ALV(More)
The diagnosis of avian leukosis virus subgroup J (ALV-J) infection in Chinese Partridge Shank chickens was confirmed by necropsy, histopathological examinations, antibody tests, viral isolation, immunofluorescence assays, and sequence analysis. Myelocytoma, myeloma, and fibrosarcoma were simultaneously found in Partridge Shank flock with ALV-J infection.(More)
According to the requirements of the Ministry of Agriculture of China, all vaccines must be screened for exogenous virus contamination before commercialization. A freeze-dried vaccine against Marek's disease was used to inoculate specific pathogen-free chickens, from which serum samples were collected after 42 days. The results were positive for(More)
BACKGROUND As a typical retrovirus, the evolution of Avian leukosis virus subgroup J (ALV-J) in different infectious ecosystems is not characterized, what we know is there are a cloud of diverse variants, namely quasispecies with considerable genetic diversity. This study is to explore the selection of infectious ecosystems on dominant variants and their(More)
Radio frequency identification (RFID) has been widely deployed for manufacturing, supply chain management, etc. Unfortunately, RFID may cause privacy and security problems. To solve these problems, researchers have studied extensively on RFID security systems. Ateniese et al. proposed an RFID protocol using insubvertible encryption based on the universal(More)