as cellular hyperdiploidy has been considered to convey genomic instability , chromosome instability in numerically normal ( diploid ) and altered ( tetraploidy and hyperdiploid ) dermal fibroblasts from two npc-affected members and two control spouses were evaluated by a parameter of chromosome stability -- the frequency of sister chromatid exchanges ( sce ) per cell .
C0037211
sister chromatid exchanges
C0007634
cell