Hentges, D J Inhibition of Shigella flexneri by the Normal Intestinal Flora III. Interactions with Bacteroides fragilis Strains in Vitro. [electronic resource] - Infection and immunity Oct 1970 - 364-70 p. digital Publication Type: Journal Article ISSN: 0019-9567 Standard No.: 10.1128/iai.2.4.364-370.1970 doi