Growth of colony morphology mutants in YG containing 10% (vol/vol) n-hexadecane in the presence or absence of 100 μg of S-2 EPS per ml. The growth temperature was at 30°C. Symbols: ○, growth of S-2 in YG; □, growth of R-1 in YG; ◊, growth of R-2 in YG; ●, growth of S-2 in YG containing n-hexadecane; ■, growth of R-1 in YG containing n-hexadecane; ⧫, growth of R-2 in YG containing n-hexadecane; ⊞, growth of R-1 in YG containing n-hexadecane in the presence of EPS; •, growth of R-2 in YG containing n-hexadecane in the presence of EPS.