Figure 3
Macroscopic appearance of 1021FDC5 cells growing on solid and semisolid MM plates. 100 μl of a suspension containing approximately 109 cells of either S. meliloti 1021FDC5 (fadD mutant) or GR4 (wild type strain which does not show swarming) were evenly spread over the surface of solid (1.3% agar) and semisolid (0.6% agar) MM plates. The photographs were taken 14 hours after incubation at 30°C.