Methods: TTV-DNA of 113 cases of parturients' blood serum and neonatal umbilical blood were detected by semi-nestedpolymerasechainreaction.
方法：应用半巢式聚合酶链反应技术检测113例孕产妇血清及其新生儿脐血的TTV—DNA。
2
Objective To study the sensitivity and specificity of single tube nestedpolymerasechainreaction (SN PCR) technique in detecting Mycobacterium tuberculosis DNA in paraffin embedded tissues.
目的探讨单管巢式聚合酶链反应(SNPCR)检测石蜡包埋组织结核分支杆菌dna的特异性和敏感性。
3
Objectives To establish an nested (polymerasechainreaction) PCR analytic method with restrictive enzyme to detect human cytomegalovirus (HCMV) rapidly in clinics.