鳙鱼(Aristichthys nobilis)外周血细胞的细微结构

本文用光镜(Wright氏染色和组化反应)和透射电镜观察鳙鱼外周血细胞.在Wright’s染色的血涂片上,可以区分:红细胞、淋巴细胞、血栓细胞、单核细胞和颗粒细胞.淋巴细胞是数目最多的白细胞,而单核细胞的数目较少.电镜观察下,红细胞的细胞器较少,只有一些囊泡样体和少量线粒体.血栓细胞由于有大量的液泡和边周微管而与小淋巴细胞有较大区别.虽然单核细胞在体积和形态上酷似颗粒细胞,但单核细胞有更丰富的粗面内质网和游离核糖体,而颗粒细胞含更多的特殊颗粒.颗粒细胞有两种类型:Ⅰ型颗粒细胞和Ⅱ型颗粒细胞.这两种颗粒细胞都是嗜中性粒细胞,是同一种细胞的不同发育时期.本文还描述了这两种颗粒细胞的重要特征.

STUDIES ON THE FINE STRUCTURE OF BIG HEAD FISH (Aristichthys nobilis) PERIPHERAL BLOOD CELLS

The fine structure of the peripheral blood cells of the Big head fish (Aristichthys nobilis) was studied by electron microscopy correlated with light microscopy (Wright's staining and some histochemical stainings ) . Examination of Wright's stained smears of peripheral blood has revealed the following cell types; erythrocyte, lymphocyte, thrombocyte, monocyte and granulocytes. Lymphocyte is the most abundant leucocyte. While monocyte is the least encountered leucocyte. Electronmicroscopically, erythrocyte had few cytoplasmic organelles. Some vesicle and a few mitochondrias could be seen. Thrombocytes could be clearly differentiated from small lymphocytes by vesicle and marginal microtubules. Although monocyte were smilar to granulocytes in size and shape, a great amount of rough endoplasmic reticu-lum, free ribosome and fewer granules were observed in monocyte. Granulocytes had two main types: Granulocyte 1 and Granulocyte 2. Those two types were neutrophil granulocyte. The major characterstics of the two types cells were described.