RAST
RDD
radioallergosorbent
random-digit dialing
RFP request for proposals
RH

RNA
Ranch Hand, member of Air Force unit primarily responsible for spraying herbicides in Vietnam
ribonucleic acid
RP relative prevalence
RR relative risk (also called “risk ratio”)
   
SCE
SE
sister chromatid exchange
standard error
SEA Southeast Asia
SEER
SES
NCI’s Surveillance, Epidemiology, and End Results
socioeconomic status
SIR
SLE
standardized incidence ratio
systemic lupus erythematosus
SLL small lymphocytic lymphoma, which is now recognized as a different stage of CLL, rather than a separate disease
SMR standardized mortality ratio
STS soft-tissue sarcoma
SWHS Seveso Women’s Health Study
   
T3
T4
triiodothyronine
thyroxine
TCDD 2,3,7,8-tetrachlorodibenzo-p-dioxin
TCDF
TCP
tetrachlorodibenzofuran, a furan congener with four chlorines
trichlorophenol
TECK
TEF
thymus-expressed chemokine
toxicity equivalency factor, potency of a dioxin-like compound (DLC) relative to TCDD
TEQ (total) toxic equivalent, or by older usage “toxicity equivalent quotient”, i.e., cumulative toxic potency, sum of TEFs for a mixture of PCDDs, PCDFs, and PCBs
tetraCDD tetrachlorodibenzo-p-dioxin, any of the 22 dioxin congeners with four chlorines, including TCDD as defined above
TGF transforming growth factor
TNF tumor necrosis factor
Treg regulatory T cell
TRH thyrotropin-releasing hormone
TSH
TTP
thyroid-stimulating hormone
time to pregnancy
TWA time-weighted average


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