| HU | heat unit; hemagglutinating unit; hemolytic unit; Hounsfield unit; human urine, human urinary; hydro... |
|---|---|
| PORH | postoperative reactive hyperemia |
| RH | radiant heat; radiation hybrid; radiological health; reactive hyperemia; recurrent herpes; regulator... |
| RHBF | reactive hyperemia blood flow |
| ROH | rat ovarian hyperemia [test] |