Micronuclei waa koromosoomyada oo dhan ama jajabyo acentric ah ama koromosoomyada giraanta kuwaas oo ku sii jira cytoplasm marka koromosoomyadu ay si joogto ah u galaan unugyada gabadha si ay u sameeyaan nuklei ka dib mitosis.
In vivo alkaline assay ayaa si sii kordheysa loogu isticmaalay qiimeynta genotoxicity ee xeryahooda. ICH S2(R1) waxa ay ku dartay qiimaynta comet beerka oo ah tijaabada 2aad ee vivo ee unugyada/meelaha dhamaadka; ah