| SF | Sabin-Feldman [test]; safety factor; salt-free; scarlet fever; screen film; seminal fluid; serosal f... |
|---|---|
| Sf | Svedberg flotation unit |
| EU | Ehrlich unit; elementary unit; emergency unit; endotoxin unit; entropy unit; enzyme unit; esterase u... |
| CU | cardiac unit; casein unit; cause unknown or undetermined; chymotrypsin unit; clinical unit; color un... |
| HU | heat unit; hemagglutinating unit; hemolytic unit; Hounsfield unit; human urine, human urinary; hydro... |