Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
Cloning competence of cells from donor animals of different ages
| 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 |
Numbers with different superscripts within columns are significantly different (P < 0.05).
