Persons who can and may develop an adverse
health effect and who are potentially
exposed to a substance under study. People already having chronic disease are excluded from the population at risk in studies of the incidence of the adverse effect.
Source: PAC, 2007,
79, 1153. (
Glossary of terms used in toxicology, 2nd edition (IUPAC Recommendations 2007)) on page 1287 [
Terms] [
Paper]