Figure 2From: Arginine deiminase pathway is far more important than urease for acid resistance and intracellular survival in Laribacter hongkongensis: a possible result of arc gene cassette duplication Examination of L . hongkongensis strains for urease and ADI activities. A, A color change from yellow to pink was indicative of positive urease activity. The photo was taken at 8Â h post-inoculation. B, A color change to orange was indicative of positive ADI activity.Back to article page