[A case-control study on the mxA polymorphisms and susceptibility to severe acute respiratory syndromes].

Objective: To investigate the association between the genetic polymorphisms of myxovirus resistance 1 (MxA) gene and susceptibility to severe acute respiratory syndromes (SARS).

Methods: A case-control study was conducted and polymerase chain reaction-restriction fragment length polymorphism (PCR-RFLP) was used to detect the T/G polymorphism at position-88 in the mxA gene promoter. Information on related factors of SARS was collected using a pre-testing questionnaire.

[A case-control study on the vitamin D receptor gene polymorphisms and susceptibility to pulmonary tuberculosis].

Objective: To investigate the association between the genetic polymorphisms of VDR gene and susceptibility to pulmonary tuberculosis.

Methods: Case-control study was conducted. PCR-RFLP technique was used to detect the C/T polymorphism in VDR gene.

[Investigations on Human ehrlichia infectious people in Daxingan Mountains].

Objective: In order to investigate the prevalence of Human ehrlichia infectious people in Daxingan Mountains.

Methods: Using PCR detection, followed by sequence analysis to detect EC and Human granulocytic ehrlichia from people in Daxingan Mountains applying the 16S rRNA gene primers of the two agents.

Results: Specific 16S rRNA gene sequences of EC and HGE agent were amplified from human blood specimens of tick-bitted patients and woodsmen.