TY - RPRT TI - DNA-DNA hybridization demonstrates apparent genetic differences between Helicobacter pylori from patients with duodenal ulcer and asymptomatic gastritis. AU - H H Yoshimura AU - D G Evans AU - D Y Graham PY - 1993 DO - 10.1007/bf01295731 UR - https://pubmed.ncbi.nlm.nih.gov/8508708/ ID - 8508708 ER -