Growth conditions affect Y. enterocolitica motility. Each panel shows an image of Y. enterocolitica JB580v grown at 26°C for 20 h on medium solidified with 0.35% Difco agar. The plates were inoculated by spotting 2 μl of culture into the center. LB medium (LB), T medium (T), T medium plus yeast extract (TYE), T medium plus NaCl (TN), T medium plus lactose (TL), and T medium plus glucose (TG) plates are shown.