Itow Tomio, Kenmochi Shigeki, Mochizuki Taeko
Department of Biology, Faculty of Education, Shizuoka University, Ohya 836, Shizuoka 422, Japan.
Dev Growth Differ. 1991 Jun;33(3):251-258. doi: 10.1111/j.1440-169X.1991.00251.x.
When the cell mass (center cells) of the early gastrulae in both American and Asian horseshoe crabs was grafted into the embryo of the homologous species, secondary embryos were formed as a result of these grafts. Secondary embryos were also formed in a similar way when the center cells of heterologous embryos were grafted between the American and Asian horseshoe crab embryos. The characteristics of the secondary embryos were similar to the host embryos in both cases, indicating that the center cells played the roles same as those by the amphibian organizer. The homogenate of center cells also induced the formation of secondary embryos. This is the first published study in which secondary embryos of horseshoe crabs have been induced by grafting. The fact may mean that this type of embryonic induction is widespread in the animal kingdom.
当把美洲鲎和亚洲鲎早期原肠胚的细胞团（中央细胞）移植到同种胚胎中时，这些移植产生了次生胚胎。当把异种胚胎的中央细胞在美洲鲎和亚洲鲎胚胎之间进行移植时，也以类似方式形成了次生胚胎。在这两种情况下，次生胚胎的特征都与宿主胚胎相似，这表明中央细胞发挥的作用与两栖类组织者相同。中央细胞的匀浆也诱导了次生胚胎的形成。这是首次发表的关于通过移植诱导鲎次生胚胎的研究。这一事实可能意味着这种胚胎诱导类型在动物界广泛存在。
