Tax-1 and Tax-2 induction of micronuclei. Micronuclei induction was evaluated in HeLa cells transiently transfected with cDNA expression vectors Tax-1, Tax-1ΔPBM, Tax-2, Tax-2+C22, or vector control. Cells were immunostained with CREST for kinetochore identification, and micronuclei induction was evaluated using confocal microscope. Data are presented as micronuclei counts per 1200 cells from 2 independent experiments.