| STEM | Scanning Transmission Electron Microscope |
|---|---|
| STF | seminiferous tubule fluid |
| STFR | Serum transferrin receptor |
| sTfR | Soluble transferrin receptor |
| STFT | Short time Fourier transform |
| STG | stomatogastric ganglion |
| STG | superior temporal gyrus |
| STGC | syncytiotrophoblastic giant cell |
| STGD | Stargardt disease |
| STH | Somatotropic hormone |