Colonization with Escherichia coli EC 25 protects neonatal rats from necrotizing enterocolitis
Fig 4
Colony morphology and DNA restriction fragments of bacterial strains.
A, Colony morphology. EC25 colonies (2–5) have characteristic strong wrinkles and small central button. Other E. coli strains have smooth (1, 8), wrinkled with large central button (7), or weakly wrinkled (10) colonies. Colonies of other species (6, 9) are grossly different from those of E.coli. B, Electropherograms of HindIII-digested DNA. 1, E. coli Di114; 2–5, E. coli EC25; 6, Micrococcus luteus; 7, E. coli FUA1242; 8, E. coli DSM1103; 9, Citrobacter freundii; 10, E. coli NRG85C.