Table 1.
Distribution of EAG potassium channel gene expression in rat sympathetic ganglia, brain and sciatic nerve
| SCG | CG | SMG | Brain | Sciatic nerve | |
|---|---|---|---|---|---|
| eag1 | +++ | +++ | +++ | ++++ | — |
| eag2 | +/− | + | + | ++ | — |
| erg1 | +++++ | +++++ | +++++ | +++++ | +++ |
| erg2 | + | ++ | +++ | — | — |
| erg3 | +++ | +++ | +++ | ++++ | — |
| elk1 | +++ | +++ | +++ | +/− | ++ |
| elk2 | — | — | — | +++ | — |
+++++, very high; ++++, high; +++, moderate; ++, low; +, very low; +/−, just detectable; -, negative. Semi-quantitative analysis of the relative levels of expression of all the EAG genes was achieved by a combination of radioactive counting of individual gels and visual comparison of autoradiographs from multiple experiments. In every case the data are based on multiple independent experiments (n = 2 to 6). Data for sciatic nerve may be subject to a systematic underestimate (see Results). Data for the erg gene expression in sympathetic ganglia is adapted from Shi et al. (1997).