| Ach | Acetylcholine |
| CTRL | Control |
| eNOS | Endothelial nitric oxide synthase |
| HUVEC | Human umbilical vein endothelial cell |
| IP3 | Inositol trisphosphate |
| KO | Knockout |
| MLCP | Myosin light-chain phosphatase |
| MLCK | Myosin light-chain kinase |
| NO | Nitric oxide |
| PC | Precontraction |
| PE | Phenylephrine |
| PLC | Phospholipase C |
| PTX | Pertussis toxin |
| RT | Resting tone |
| ROCK | Rho-associated protein kinase |
| S1P | Sphingosine-1-phosphate |
| S1P1/S1P2/S1P3 | Sphingosine-1-phosphate receptor |
| TA | Thoracic Aorta |
| W | Wash out |
| WT | Wild type |
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