passages.id: split_8_test_2230_passage
passages.type: progene_text
passages.text: The analysis of sera from H. pylori - infected and non - infected patients , before and 3 and 5 months after eradication , showed that the antibody response against unknown H. pylori antigens at 32 , 30 , 22 and 14 kDa in sodium dodecylsulphate polyacrylamide gel electrophoresis decreased by > or = 60 % at 3 months and > or = 70 % at 5 months after treatment .