| SSIE | Smithsonian Science Information Exchange |
|---|---|
| TEC | total electron count; total eosinophil count; total exchange capacity; transient erythroblastopenia ... |
| TET | tetracycline; total ejection time; total exchange thyroxine; treadmill exercise test |
| TPE | therapeutic plasma exchange; totally protected environment; typhoid-parathyroid enteritis |
| CCCC | centrifugal countercurrent chromatography |