| RI | radiation intensity; radioactive isotope; radioimmunology; recession index; recombinant inbred [stra... |
|---|---|
| ROI | reactive oxygen intermediate; region of interest; right occipitolateral [fetal position] |
| ECIL | extracorporeal irradiation of lymph |
| L/P | lactate/pyruvate [ratio]; liver plasma [concentration]; lymph/plasma [ratio] |
| LRR | labyrinthine righting reflex; lymph return rate |