| SIR | single isomorphous replacement; specific immune release; standardized incidence ratio; syndrome of i... |
|---|---|
| SIREF | specific immune response enhancing factor |
| SIRS | soluble immune response suppressor; Structured Interview of Reported Symptoms; systemic inflammatory... |
| TLI | thymidine labeling index; total lymphatic irradiation; trypsin-like immune activity; Tucker-Lewis in... |
| TPIA | Treponema pallidum immune adherence |