From: Cloning animals by somatic cell nuclear transfer – biological factors
Donor age
No. Oocytes used
(%) Development
Cleavage
Blastocyst
Fetus (D57)
630
82
48a
New born
302
76
51a
2 years
158
79
38b
10–12 years
424
73
35b
16 years
269
63
37b