JEB -- Rheault and O’Donnell 204 (13): 2289 Figure IG9

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Fig. 9. Effects of 1 mmoll^-1 cAMP on K⁺ fluxes on adjacent principal and stellate cells in the main segment of the Malpighian tubules of Drosophila melanogaster. The effects before (filled columns) and after (open columns) treatment with cAMP are shown. There is a significant (P<0.05) effect of cAMP only on principal cells. Values are means ± S.E.M.; N=19 principal cells and five stellate cells in five tubules.