Direct detection and analysis of vacA genotypes and cagA gene of Helicobacter pylori from gastric biopsies by a novel multiplex polymerase chain reaction assay.
Kumar S, Kumar A, Dixit VK. Direct detection and analysis of vacA genotypes and cagA gene of Helicobacter pylori from gastric biopsies by a novel multiplex polymerase chain reaction assay. Diagn Microbiol Infect Dis. 2008 Dec; 62(4):366-73.