objective: to examine a possible influence of the extract of chinese herb on the helicobacter pylori vacuolating cytotoxin secretion in vitro.
这为研究抗幽门螺桿菌感染的中药的独特的药理作用开辟了一条新途径。
the vacuolating cytotoxin from helicobacter pylori yc-11 was purified by using water-extracting, salt precipitation and gel filtration chromatographic fractionation.