Intact antigen uptake in intestinal epithelial cells of marine fish larvae

Autor:	G. H. Hansen, J. A. Olafsen
Rok vydání:	1992
Předmět:	animal structures biology fungi Hindgut Foregut Aquatic Science Endocytosis biology.organism_classification Vibrio Microbiology Fluorescence microscope Gadus Bacterial antigen Ecology Evolution Behavior and Systematics Bacteria
Zdroj:	Journal of Fish Biology. 40:141-156
ISSN:	1095-8649 0022-1112
DOI:	10.1111/j.1095-8649.1992.tb02562.x
Popis:	Endocytosis of bacteria by epithelial cells in the hindgut of 4- to 6-day-old cod (Gadus morhua L.) larvae and of 10- to 12-day-old herring (Clupea harengus L.) larvae was demonstrated by fluorescence microscopy and transmission electron microscopy. Fixed sheep erythrocytes and bacteria-sized latex particles were not ingested by these cells. By immunohistochemical methods intact bacterial antigens were observed in columnar epithelial cells in the foregut of 4-day-old yolk-sac larvae of cod. In these cells a preferential uptake of Vibrio fischeri and Vibrio salmonicida cells as compared to Flavobacterium sp. was found. The possible role of these findings in the establishment of an indigenous microflora, defence against pathogens or nutrient absorption in fish larvae is discussed.
Databáze:	OpenAIRE
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