Fig. 2.

Photomicrographic images of cloned sei whale embryos (A and B) derived from interspecies somatic cell nuclear transfer using pig oocytes as recipient cytoplasts. The metaphase-like structures of nuclei that arrested at the two- (C) and four-cell (D) stages after 7-day culture in a porcine zygote medium-3 medium containing 0.3% (w/v) bovine serum albumin. Scale bars : 20 µm.