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造血系统包括原始的游走性多能干细胞及其后裔(后续细胞)和吸引这些细胞进行分化的某些栖息场所。后者的结构不是由干细胞的衍生物决定的,而是决定于特异性支持细胞,造血和淋巴细胞就是在它们作成的网架上活动的。这些器官都是网状内皮系统的组成部分,构成支持基质的成纤维和内皮细胞即以此命名。它们与有管结构有某些共同处,即为一条索和窦系统,衬血支持细胞。亚灵长类动物胎生期间,所有网状内皮系统器官都可含有
The hematopoietic system includes primitive migratory pluripotent stem cells and their descendants (subsequent cells) and some habitats that attract these cells for differentiation. The latter structure is not determined by the stem cell derivatives, but rather by the specific support of the cells on which the hematopoietic and lymphoid cells are made. These organs are part of the reticuloendothelial system, and the fibroblasts and endothelial cells that make up the stroma are named after that. They have something in common with the tube structure, which is a cable and sinus system lining the blood-supporting cells. Sub-linogenic animals may contain all reticuloendothelial system organs during viviparous life