Genome sequencing has yielded a plethora of new genes the function of which can be
unravelled through comparative genomic approaches. Increasingly, developmental …

Several teleosts, such as the zebrafish and the medakafish or medaka (Oryzias latipes), are
used as vertebrate model systems in various fields of biology. The medaka is suitable for …

Spermatogonia are the male germ stem cells that continuously produce sperm for the next
generation. Spermatogenesis is a complicated process that proceeds through mitotic phase …

Haploid embryonic stem (ES) cells combine haploidy and pluripotency, enabling direct
genetic analyses of recessive phenotypes in vertebrate cells. Haploid cells have been …

Embryonic stem cells (ESC) have been isolated from pregastrulation mammalian embryos.
The maintenance of their pluripotency and ability to self-renew has been shown to be …

Abstract The Japanese medaka, Oryzias latipes, is a vertebrate teleost model with a long
history of genetic research. A number of unique features and established resources …

This introductory review briefly describes the history of medaka as a research organism and
the previous accomplishments of the medaka field. The medaka genome project currently …

Although the zebrafish possesses many characteristics that make it a valuable model for
genetic studies of vertebrate development, one deficiency of this model system is the …

Japanese medaka (Oryzias latipes) is a freshwater (FW) teleost that is popular throughout
the world for laboratory use. In this paper, we discuss the utility of Japanese medaka and …

vasa is essential for germline development. However, the precise processes in which vasa
involves vary considerably in diverse animal phyla. Here we show that vasa is required for …