Table 1

Telomere lengths in cloned animals

Donor Cell
TRF (kb)
Clone vs. Control
Tissue Assayed
Telomerase
Ref



Species
Origin
Cell type
Note
Donor
Control
Clone







Sheep
Adult Female
Mammary gland


23.9
19.14
Shorter
Blood

[11]
Sheep
Fetal Female
Embryonic
Very short culture

23.9
21.19
Similar
Blood

[11]
Cattle
Fetal Female
fibroblast
Extreme Long culture
15.2
18.3
20.1
Longer
Blood cells
High in Blastocyst
[13]
Cattle
Adult Female
Fibroblast cumulus

12.4
14.7
15.4
Similar
Fibroblast
High in blastocyst
[15]
Cattle
Adult Female
fibroblast

13.68
20.9 (fetal) 20.5 (calf)
17.95 (fetal) 15.3 (calf)
Similar Similar
Fibroblast
High in blastocyst
[16]

Adult Male


17.85
20.9 (fetal) 20.5 (calf)
22.74 (fetal) 21.33 (calf)
Similar
Fibroblast
High in blastocyst
[16]
Cattle
Adult Male
Ear




Longer
Ear

[12]

Adult Male
Ear




Similar
White blood cells

[12]
Cattle
Adult Female
Epithelial

15–16
20.43
12.5–14.3
Shorter
White blood cells

[21]

Adult Female
Oviduct

16.9
20.43
14.9–16.0
Shorter
White blood cells

[21]

Adult Male
Muscle

20.1
20.43
19.6–19.9
Similar
White blood cells

[21]

Adult Male
Skin fibroblast

18.2
20.43
20.0–20.4
Similar
White blood cells

[21]

Fetal
Embryonic cells


20.43
21.7–26.2
Longer
White blood cells

[21]
Mouse
Adult
Cumulus

48
48
48
Similar


[17]

Xu and Yang Reproductive Biology and Endocrinology 2003 1:105   doi:10.1186/1477-7827-1-105