Activation of ribosomal RNA genes in porcine embryos produced in vitro or by somatic cell nuclear transfer

Bolette Bjerregaard, Hanne Gervi Pedersen, Anne Sørig Jakobsen, Lee F. Rickords, Liangxue Lai, Hee-Tae Cheong, Melissa Samuel, Randall S. Prather, Frantisek Strejcek, Zaida R. Rasmussen, Jozef Laurincik, Heiner Niemann, Poul Maddox-Hyttel, Preben Dybdahl Thomsen