Reproductive Biology and Endocrinology

Table 4 Cloning competence of cells from donor animals of different ages

From: Cloning animals by somatic cell nuclear transfer – biological factors

Donor age	No. Oocytes used	(%) Development
		Cleavage	Blastocyst
Fetus (D57)	630	82	48^a
New born	302	76	51^a
2 years	158	79	38^b
10–12 years	424	73	35^b
16 years	269	63	37^b

Numbers with different superscripts within columns are significantly different (P < 0.05).

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ISSN: 1477-7827

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