Figure 5.

AdoRbl in a microbial bioassay. Application of vitamin B₁₂ (CNCbl) to the plate promotes the growth of a S. enterica cbiB metE strain (A). AdoRbl on its own does not promote growth (B). Mixing AdoRbl with B₁₂ results in increased growth circles that are noticeably less dense than the B₁₂ growth halos (C, E, G). Addition of AdoRbl in close proximity to the point of application of B₁₂ results in the appearance of a zone of inhibition that gets more extensive as more AdoRbl is added (D, F, H).