Intestinal uptake of ouabain and digitoxin in the milkweed bug,Oncopeltus fasciatus |
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Authors: | Carolyn A Yoder D E Leonard Dr J Lerner |
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Institution: | (1) Departments of Entomology and Biochemistry, University of Maine, 04473 Orono, Maine, USA |
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Abstract: | Summary The absorption of ouabain and digitoxin into the gut of the milkweed bug was studied by a tissue-accumulation technique. Uptake of both compounds obeyed diffusion kinetics, was Na+ sensitive, and for digitoxin, was concentrative.The authors express their appreciation to Dr.James A. Slater and Ms.Flavia O'Rourke, Biological Sciences Group, University of Connecticut, Storrs, Conn. (USA) for supplying milkweed bugs. This work was supported by the University of Maine Honors Program and the University of Maine Agricultural Experiment Station. |
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