Comment on

• Self-organization of microtubules into bipolar spindles around artificial chromosomes in Xenopus egg extracts.

  Heald R, Tournebize R, Blank T, Sandaltzopoulos R, Becker P, Hyman A, Karsenti E. Heald R, et al. Nature. 1996 Aug 1;382(6590):420-5. doi: 10.1038/382420a0. Nature. 1996. PMID: 8684481
• 'Anaphase' and cytokinesis in the absence of chromosomes.

  Zhang D, Nicklas RB. Zhang D, et al. Nature. 1996 Aug 1;382(6590):466-8. doi: 10.1038/382466a0. Nature. 1996. PMID: 8684488