| Abbreviations | Meaning |
 | SRCA | Specific Red Cell Adherence |
 | SS | Sickle Cell |
 | SSC | Somatic Stem Cell |
 | SSC | Syngeneic Spleen Cell |
 | SSCA | Single-strand Conformational Analysis; Spontaneous Suppressor Cell Activity |
 | ST | Sickle [cell] Thalassemia |
 | STD | Selective T-cell Defect |
 | STE | Scholars For Teaching Excellence |
 | STH | Sickle Cell Thalassemia |
 | STK | Stem Cell Tyrosine Kinase; Streptokinase |
 | STOP | Stroke Prevention In Sickle Cell Disease [study] |
 | SV-HUC | Simian Virus-human Uro-epithelial Cell |
 | T-CFC | T-colony Forming Cell |
 | T-CLL | T-cell Chronic Lymphatic Leukemia |
 | T-D | T-cell Dependent [antigen] |
 | T-I | T-cell Independent [antigen] |
 | T-IBS | T-cell Immunoblastic Sarcoma |
 | T-NHL | T-cell-derived Non-Hodgkin Leukemia |
 | TAC | Transient Amplifying Cells (cells That Have The Potential To Complete A Limited Number Of Divisions Before Differentiating) |
 | TAL | T-cell Acute Leukemia |
 | TALL, T-ALL | T-cell Acute Lymphoblastic Leukemia |
 | TALLA | T-cell Acute Lymphoblastic Leukemia Antigen |
 | TBI | T- And B-cell Epitopes Containing Immunogen |
 | TC | Target Cell |
 | TC | Cytotoxic T Cell, Cytotoxic T Lymphocyte |
 | TC | The Generation Time Of A Cell Cycle |
 | TC | Theca Cell |
 | TCA | T-cell A Locus |
 | TCAR | T-cell Antigen Receptor |
 | TCB | Tumor Cell Burden |
 | TCC | Thromboplastic Cell Component |
 | TCC | Transitional-cell Carcinoma |
 | TCCA, TCCAV | Transitional Cell Cancer-associated [virus] |
 | TCCDS | Transitional Cell Carcinoma Dataset |
 | TCCL | T-cell Chronic Lymphoblastic Leukemia |
 | TCD | T-cell Depletion |
 | TCE | T-cell Enriched; Tetrachlorodiphenyl Ethane; Total Colon Examination; Trichloroethane; Trichloroethylene |
 | TCF | T-cell Factor |
 | TCGF | T-cell Growth Factor |
 | TCH | Tanned-cell Hemagglutination; Thiophen-2-carboxylic Acid Hydrazide; Total Circulating Hemoglobin; Turn, Cough, Hyperventilate |
 | TCIS | T-cell Immunodeficiency Syndrome; Total Corrected Increment Score; Transitional Carcinoma In Situ |
 | TCL | T-cell Leukemia |
 | TCL | T-cell Lymphoma |
 | TCR | T-cell Reactivity |
 | TCR | T-cell Receptor |
 | TCR | T-cell Rosette |
 | TCRA | T-cell Receptor Alpha |
 | TCRB | T-cell Receptor Beta |
 | TCRBCL | T-cell-rich B-cell Lymphoma |
 | TCRD | T-cell Receptor Delta |