FORMAL, S B Quantitative studies of cross reactions between Shigella flexneri types 1a, 1b, and 31. [electronic resource] - Journal of immunology (Baltimore, Md. : 1950) Mar 1953 - 260-6 p. digital Publication Type: Journal Article ISSN: 0022-1767 Subjects--Topical Terms: Cross ReactionsHumansShigellaShigella flexneri