in the subjects at the age 80-90 years satellite stalks of chromatids-1 ( in all dna strands thymidine was substituted by 5-brdu ) of the d chromosome in cis-position are included into associations with lower frequency , as compared with the satellite stalks of chromatids-2 ( thymidine+ is only substituted by 5-brdu in a half dna strands of the chromosome ) .
C0008545
chromatids
C0008633
chromosome