Polarity of spindle microtubules.
D000818:Animals; D001921:Brain / Q000648:ultrastructure; D002696:Chlamydomonas / Q000648:ultrastructure; D004398:Dyneins / Q000378:metabolism; D008870:Microtubules / Q000648:ultrastructure*; D008938:Mitosis; D014404:Tubulin / Q000378:metabolism
D014404:Tubulin; D004398:Dyneins