although we can find no difference between the mitochondrial genomes of normal and tumor cells regarding the regulation of tumorigenicity , the segregation pattern of the mtdna in the cybrids was of interest : in the absence of any mitochondrial selection , helatg mtdna was lost while fibroblast mtdna was retained , even though the nuclear component of these cybrids was from the helatg cells .
C0026237
mitochondrial
C0007634
cells