Fusion between HAb2 cells results thus in a
rearrangement of the whole structure and shape of the microtubule
cytoskeleton.We observe no bundles of microtubules passing through
the expanding fusion pores. Even 2 h after the low-pH application,
when syncytium formation and the microtubule rearrangements
appear to be completed, we observe multinucleated cells containing
multiple microtubules organizing centers (MTOC) located away from
the gathered nuclei