C57BL/6, oo inta badan loo yaqaan "C57 black 6", "C57", ama "black 6" (soo gaabinta heerka B6), waa nooc ka mid ah jiirka shaybaadhka ee caadiga ah. Waxaa si ballaaran loo isticmaalaa sida jiirka transgenic ee baaritaanka hidda-socodka si loogu ekaado cilladaha hidde-socodka aadanaha.
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.
Marka laga soo tago in ay na siiso alaab tayo sare leh, shaqaalaha adeeggaagu waa kuwo aad u xirfad badan, awood u leh in ay si buuxda u fahmaan baahiyahayga, marka laga eego dhinaca shirkadeena, waxay na siiyaan adeegyo badan oo la-talin oo wax ku ool ah.