Here's what rhymes with microtubules.

Consider these alternatives

microtubule / tubule spindle / simple organelles / self kinetochore / for organelle / well mitosis / diagnosis centrosome / home glycoproteins / proteins nuclei / by reticulum / curriculum depolymerization / information dendrites / rights oligodendrocyte / erythrocyte phosphorylated / related kinesin / finishing integrins / since