Sandwich ELISA, dot blotting and DNA sequencing methods were used for the identification of positive clones.
通过硝酸纤维膜斑点印迹法进行阳性克隆鑒定。
and none exposure control group with their chorionic villi also collected by curettage. Single stranded and double stranded breaks in DNA of villus cells in all cases were quantitated by spectrophotometry and using 32 P labeled Alu probe for dot blotting hybridization.