| C1 | first cervical nerve; first cervical vertebra; first component of complement |
|---|---|
| HCG, hCG | Human Chorionic Gonadotropin; 사람융모성성선자극호르몬 1. Placental Glycoprotein Hormone &nbs... |
| FIFO | first in, first out |
| CI | first cranial nerve |
| CSN | cardiac sympathetic nerve; carotid sinus nerve |