The sites of intra-embryonic haemopoiesis prior to the hepatic haemopoiesis in the chick.
スポンサーリンク
概要
- 論文の詳細を見る
The sites of intra-embryonic haemopoiesis of the chick embryo (stages 15-26) preceding the initiation of hepatic haemopoiesis was investigated by means of serial sections stained with azan liquid. Hitherto undescribed blood islands of large size and clear outline were found in the neck and lateral body fold of the embryo. They consisted of dense aggregations of erythroblasts and thin endothelial cells surrounding them, and could be clearly identified by azan staining. In the neck, the blood islands were located near the branchyal arteries at stages 15-18, while in the lateral fold they were seen mainly at stages 17-19.Examination of serial sections indicated that the blood islands extended in a cephalocaudal direction, assuming a rod shape. The largest blood island was found in the lateral fold, measuring 50μm in diameter and 900μm in length.Besides these islands, occasional sites of haemopoiesis were found in the mesonephros, mesentery, dorsal regions of the trunk, head and allantois after stage 18. As the blood islands found in this study alternated their localization sites according to developmental stage, they were considered to be temporary haemopoietic tissues rather than persistent ones.
- 国際組織細胞学会の論文
国際組織細胞学会 | 論文
- Immunohistochemical localization of vascular endothelial growth factor in the endocrine glands of the rat
- Reduced expression of endogenous secretory receptor for advanced glycation endproducts in hippocampal neurons of Alzheimer’s disease brains
- A longitudinal study on the expression of the opsin gene in the degenerating retina of C3H/He mice.
- Expression of the arylhydrocarbon receptor in the periimplantation period of the mouse uterus and the impact of dioxin on mouse implantation
- Immunohistochemical studies on the development of tyrosine hydroxylase- and serotonin-immunoreactive neurons in fetal dorsal raphe tissue transplanted into the anterior eye chamber of adult rats.