0
1
2
3
4
0
0.2
0.4
0.6
0.8
1
methyl cellulose concentration [% w/v]
mean velocity [ mm/min]
Effect of external force on motility
mean velocity [ mm/min]
0
0.4
0.8
1.2
1.6
0
0.5
1
1.5
2
2.5
3
3.5
bead diameter [mm]
billes 1600 N-WASP
billes 200 N-WASP