. | Mean flux (pmol cm-2 s-1) . | n sites . | N tubules . | P . |
---|---|---|---|---|
TEA | 1.88±0.30 | 15 | 5 | <0.001 |
TMA | 0.74±0.22 | |||
TEA | 3.01±0.16 | 20 | 5 | <0.001 |
TPA | 1.61±0.07 | |||
TEA | 3.57±0.39 | 27 | 8 | <0.001 |
TBA | 1.67±0.10 |
. | Mean flux (pmol cm-2 s-1) . | n sites . | N tubules . | P . |
---|---|---|---|---|
TEA | 1.88±0.30 | 15 | 5 | <0.001 |
TMA | 0.74±0.22 | |||
TEA | 3.01±0.16 | 20 | 5 | <0.001 |
TPA | 1.61±0.07 | |||
TEA | 3.57±0.39 | 27 | 8 | <0.001 |
TBA | 1.67±0.10 |
Values are means ± s.e.m. All tetraalkylammonium compounds were dissolved in saline at a concentration of 100 μmol l-1. The order of presentation of the compounds was reversed for each tubule. TBA, tetrabutylammonium; TEA, tetraethylammonium; TMA,tetramethylammonium; TPA, tetrapropylammonium; LMT, lower Malpighian tubule.