Keijiro Nirasawa

Estimation of the Time of Divergence between Japanese Mishima Island Cattle and Other Cattle Populations Using Microsatellite DNA Markers (2008)

Nagamine, Yoshitaka, Nirasawa, Keijiro, Takahashi, Hideaki, Sasaki, Osamu, Ishii, Kazuo, Minezawa, Mitsuru, ...

We applied the theory of random genetic drift to determine the divergence history of a closed cattle population over the relatively short timescale of several hundred years. The divergence history of...

Microinjection of Cytoplasm or Mitochondria Derived from Somatic Cells Affects Parthenogenetic Development of Murine Oocytes1 (2005)

Kumiko Takeda, Mariko Tasai, Masaki Iwamoto, Akira Onishi, Takahiro Tagami, Keijiro Nirasawa, ...

Cloned mammals are readily obtained by nuclear transfer using cultured somatic cells; however, the rate of generating live offspring from the reconstructed embryos remains low. In nuclear transfer...