THE JUNCTURE BETWEEN TWO MIGRATING BACTERIAL POPULATIONS
Source: Gibbs Lab
"Imaged are the interactions between cells from two different Proteus mirabilis strains (HI4320 in blue and BB2000 in yellow). In just a few hours, these two populations will have separated and a visible boundary will have formed between the populations. In contrast, swarms of the same strain do not give rise to a visible boundary and merge, indicating that P. mirabilis swarms are capable of territoriality and of self versus non-self recognition."