Table 2. Efficiency of steps in cloned process from oocytes to transgenic calves.

Step	Total No.	Percent*
Oocytes	844	–
Re-constructed embryos	623/844	73.8
Blastocysts	280/623	44.9
Transferred recipients	50/98†	51.0
Pregnant	10/50	20.0
Born alive	5/10	50.0
Alive after weaning	2/98	2.04

^*Percent indicate the percentage of embryos obtained successfully each step.

^†96 blastocysts were transferred to 48 recipients with two blastocysts per recipient and 2 blastocysts were transferred to 2 recipients with one blastocyst per recipient.