Swarming of A. baumannii ATCC 17978. A. baumannii colony material was spotted on Luria-Bertani medium containing 0.25% agar. Swarming motility (A) is visible as the channel-like growth around the dense white colony material. The absence of halo growth around the colony (B) indicates lack of swarming motility of A. baumannii when available iron is limited.
Eijkelkamp et al. BMC Genomics 2011 12:126 doi:10.1186/1471-2164-12-126