Article ISI
WORLD JOURNAL OF GASTROENTEROLOGY  (2005)

The H. Pylori vaca s1a and s1b alleles from clinical isolates from different regions of Chile show a distinct geographic distribution.

Díaz, MI; Valdivia, A; Martínez, P; Palacios, JL; Harris, P; Novales, J; Garrido, J; Valderrama, D; Shilling, C; Kirberg, A; Hebel, E; Fierro, J; Bravo, R; Siegel, F; Leon, G; Klapp, G; Venegas, A.