The fate of intraperitoneally injected carbon particles in cyprinid fish |
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Authors: | Dr. Ir. C. H. J. Lamers H. K. Parmentier |
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Affiliation: | (1) Department of Experimental Animal Morphology and Cell Biology, Agricultural University, Wageningen, The Netherlands;(2) Department of Experimental Animal Morphology and Cell Biology, Agricultural University, P.O. Box 338, 6700 AH Wageningen, The Netherlands |
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Abstract: | Summary The lymphoid organs of rosy barb (Barbus conchonius) and carp (Cyprinus carpio) were investigated for their phagocytic uptake of carbon, after its intraperitoneal injection. Carbon handling was similar in both species. It was first detected in the lymphoid organs at 30 min after injection. During the first day, carbon was phagocytized by macrophages situated in the spleen within the ellipsoids and in the red pulp. In head and trunk kidney, carbon was found in macrophages scattered throughout the haemopoietic parenchyma, and in cells lining the blood sinuses. In the spleen, macrophages replete with carbon left the ellipsoidal structures and formed aggregates with pigment-containing macrophages from day 6 onwards. In all lymphoid organs, almost all carbon was ultimately concentrated in the melano-macrophage centres. |
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Keywords: | Carbon phagocytosis Cyprinid fish Lymphoid organs Macrophages Melano-macrophage centre |
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