| S1P | sphingosine 1-phosphate |
| TNFα | tumor necrosis factor alpha |
| S1PR | sphingosine 1-phosphate receptors |
| SK | sphingosine kinase |
| SPL | S1P lyase |
| SPP | S1P phosphatases |
| LPP | lipid phosphate phosphatases |
| Spns2 | spinster homolog 2 |
| NMR | Nuclear magnetic resonance |
| RMP | resting membrane potential |
| Rm | membrane resistance |
| Cm | cell capacitance |
| PCA | principal component analysis |