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 8 h post-inoculation. B, A color change to orange was indicative of positive ADI activity.
Xiong et al. BMC Microbiology 2014 14:42 doi:10.1186/1471-2180-14-42