Salvadori, Marcia Regina Lethal factor to mice produced by Escherichia coli isolated from chickens with swollen head syndrome. [electronic resource] - Microbiology and immunology 2002 - 773-5 p. digital Publication Type: Journal Article; Research Support, Non-U.S. Gov't ISSN: 0385-5600 Standard No.: 10.1111/j.1348-0421.2002.tb02763.x doi Subjects--Topical Terms: AnimalsBacterial Proteins--biosynthesisChickensEnterotoxins--biosynthesisEscherichia coli--isolation & purificationEscherichia coli Infections--microbiologyFemaleLung--pathologyMiceMice, Inbred BALB CPoultry Diseases--microbiology