Figure 2
From: Polar electrostatic forces drive poleward chromosome motions
Nanoscale electrostatic disassembly force at a centrosome. A poleward force results from an electrostatic attraction between positively-charged microtubule free ends and an oppositely charged centrosome matrix. Only disassembling microtubules are depicted, assembling microtubules could also be momentarily attracted to a centrosome.