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학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
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Identification of blood cells and their physological functions in the cultured scallop, Patinopecten yessoensis collected from Abashiri Bay, Hokkaido, Japan were studied by electron microscopic structure and histological observations. The physiological function of each blood cell type was studied on the basis of its cytological structure, the lysosome in the blood cell and its phagocytosis.
The blood cells were classified as Type Ⅰ, Type Ⅱ and Type Ⅲ. The morphological characteristics of each blood cell type are as follows ;
Type Ⅰ : The cell is oval shaped and its cytoplasm contains comparatively low electron-dense materials. The oval nucleus is sometimes ramified into two nuclei. Lumps of tubular smooth endoplasmic reticula and vacuoles are distributed near the nucleus.
Type Ⅱ : The cell appears long and oval shaped, and its cytoplasm contains high electron-dense materials. The oval nucleus does not ramify, and large numbers of saclike smooth endoplasmic reticula and free ribosomes are developed around the nucleus. No vacuoles exist in the cytoplasm
Type Ⅲ : The cell is round in shape and the electron density of the cytoplasm is the highest among the three types of cells because of large quantities of roughsurfaced endoplasmic reticula and no vacuoles. Particularly, the nucleus reveals a wheel-like shape owing to lumps of tuberous chromatin.
The cells of Type Ⅰ and Ⅱ seem to have the role of carrying out phagocytosis on either foreign materials such as bacteria or endogenous old cells and the transport of nutritive materials. The type Ⅲ cell, which has not been found in any bivalve species of non Pectinidae, may be said to have the function of production and the secretion of protein related to some humoral defense materials.
The blood cells were classified as Type Ⅰ, Type Ⅱ and Type Ⅲ. The morphological characteristics of each blood cell type are as follows ;
Type Ⅰ : The cell is oval shaped and its cytoplasm contains comparatively low electron-dense materials. The oval nucleus is sometimes ramified into two nuclei. Lumps of tubular smooth endoplasmic reticula and vacuoles are distributed near the nucleus.
Type Ⅱ : The cell appears long and oval shaped, and its cytoplasm contains high electron-dense materials. The oval nucleus does not ramify, and large numbers of saclike smooth endoplasmic reticula and free ribosomes are developed around the nucleus. No vacuoles exist in the cytoplasm
Type Ⅲ : The cell is round in shape and the electron density of the cytoplasm is the highest among the three types of cells because of large quantities of roughsurfaced endoplasmic reticula and no vacuoles. Particularly, the nucleus reveals a wheel-like shape owing to lumps of tuberous chromatin.
The cells of Type Ⅰ and Ⅱ seem to have the role of carrying out phagocytosis on either foreign materials such as bacteria or endogenous old cells and the transport of nutritive materials. The type Ⅲ cell, which has not been found in any bivalve species of non Pectinidae, may be said to have the function of production and the secretion of protein related to some humoral defense materials.
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