Martin Gary G, Hose Jo Ellen, Kim Janet Jieun
Department of Biology, Occidental College, Los Angeles, California 90041.
J Morphol. 1987 Jun;192(3):193-204. doi: 10.1002/jmor.1051920302.
The architecture and fine structure of the epigastric hematopoietic nodules of the ridgeback prawn, Sicyonia ingentis, are described. The nodules consist of a highly branched series of tubules that contain the maturing hemocytes within a connective tissue stroma. Hemocytes can exit the hematopoietic nodules by penetrating through fenestrations in the endothelial cell layer into the central hemal space or by migrating through the outer later of capsular cells and associated collagen fibrils. Four hemocyte categories were observed: agranular, small granule with cytoplasmic deposits, small granule without cytoplasmic deposits, and large granule hemocytes. This classification was based upon the presence, size, and type of cytoplasmic granules and the presence of cytoplasmic deposits. Only agranular cells and small granule hemocytes without cytoplasmic deposits appeared capable of division. Intermediate stages were observed between agranular hemocytes and small granule hemocytes with deposits and between small granule hemocytes without deposits and large granule hemocytes, suggesting existence of two distinct hemocyte lines.
描述了脊尾白虾（Sicyonia ingentis）上腹部造血结节的结构和精细结构。这些结节由一系列高度分支的小管组成，在结缔组织基质中包含正在成熟的血细胞。血细胞可以通过穿透内皮细胞层的窗孔进入中央血腔，或者通过穿过囊细胞外层和相关胶原纤维迁移而离开造血结节。观察到四类血细胞：无颗粒细胞、有细胞质沉积物的小颗粒细胞、无细胞质沉积物的小颗粒细胞和大颗粒血细胞。这种分类基于细胞质颗粒的存在、大小和类型以及细胞质沉积物的存在。只有无颗粒细胞和无细胞质沉积物的小颗粒血细胞似乎能够分裂。在无颗粒血细胞和有沉积物的小颗粒血细胞之间以及无沉积物的小颗粒血细胞和大颗粒血细胞之间观察到中间阶段，表明存在两条不同的血细胞系。
