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The paper has been selected by the journal as an Editor's Pick, highlighting the importance of the research. This suggests the two forms of movement use distinct physical mechanisms, and that surfactants that can be used to selectively suppress (or enhance) the movement of bacteria depending on whether they are swashing or swarming. In the human oral microbiome, T9SS-containing bacteria are linked to gum disease, where their secreted proteins promote inflammation in the mouth and brain, contributing to disorders such as heart disease and Alzheimer's. Shrivastava is a researcher with the Biodesign Center for Fundamental and Applied Microbiomics, the Biodesign Center for Mechanisms of Evolution, and assistant professor with ASU's School of Life Sciences.