Table 1.

Imprinting status in different pig tissues and for three development stages expressed as ratio of paternal to maternal IGF2 gene expression.

Tissue	Ratio paternal to maternal gene expression (± SD)
Adult liver (N = 6)	4.2 (± 6.2)
Newborn liver (N = 2)	21.3 (± 0.01)
Foetal liver (N = 2)	Paternal expression
Adult muscle (N = 6)	9.2 (± 6.2)
Newborn muscle (N = 2)	19.9 (± 6.0)
Foetal muscle (N = 2)	Paternal expression (N = 1) and 14 (N = 1))
Adult kidney (N = 6)	22.9 (± 10.2)
Newborn kidney (N = 1)	34.0
Foetal kidney (N = 2)	Paternal expression