File:PMC3361161 TSWJ2012-280264.001.png

English: fig1: Observation of Salmonella enterica subsp. enterica serovar Typhimurium LB5010 and the stbC mutant strain grown in static broth culture. (a) Salmonella enterica subsp. enterica serovar Typhimurium LB5010 strain grown in static LB broth condition at 37°C for 48 h produced fimbrial appendages (arrow). No flagella structures were observed. (b) Salmonella enterica subsp. enterica serovar Typhimurium stbC mutant strain grown in static LB broth condition at 37°C for 48 h produced fimbrial appendages (arrow) and flagella structures (arrowhead). Bacterial cells were negatively stained with 2% of phosphotungstic acid (20,000x).