Characteristics of extracellular products of Flavobacterium sp., a pathogen of bacterial gill disease.

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Other Title
  • 細菌性鰓病の原因菌 Flavobacterium sp. の産生する菌体外物質の症状
  • 細菌性鰓病の原因菌Flavobacterium sp.の産生する菌体外物質の性状〔英文〕
  • サイキンセイ エラビョウ ノ ゲンインキンFlavobacterium sp

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Abstract

The extracellular products (ECP) of Flavobacterium sp. were studied. The ECP were obtained from the strain BGD 7721. (ATCC 35035) cultured on CGY agar. Hemagglutinating activity of the ECP for erythrocytes from several kinds of animals and agglutinating activity for formalin-killed bacterial cells (BGD 7721) were detected. By immersing juvenile rainbow trout in the solution, the ECP induced clubbing of gill filaments and, then, fusing of lamella, which were characteristics of BGD. Protease, phosphatase and phosphoamidase were detected in the ECP, but hemolysin and endotoxin were not. The serological analysis indicated that the ECP had two types of antigen, one specific to itself and the other common to the washed formalin-killed cells.

Journal

  • Fish Pathology

    Fish Pathology 20 (2/3), 167-171, 1985

    The Japanese Society of Fish Pathology

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