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Keywords:
Exposure,
Lifetime,
Fraction,
Intermittent,
Toxic
A chronic exposure is one that occurred over a long period of time - weeks, months or years.
Exposure, usually at lower doses, over a long period of time.
Continued exposures occurring over an extended period of time, or a significant fraction of the lifetime of the exposed individuals or test species. (after Duffus, 1993)
continuous or repeated exposure to a hazardous substance over a long period of time
Multiple or continuous exposures occurring over an extended period of time or a significant fraction of an individual's lifetime.
Exposure to toxic chemicals occurring over a long period of time (months to over one year).
exposure to a substance over a long period of time, possibly resulting in adverse health effects. See also acute exposure, fractionated exposure.
Continuous or intermittent exposure over a long time period, usually to relatively low material amounts or concentrations.
A series of exposures occurring over a longer period of time.
Multiple exposures occurring over an extended period of time (e.g., 3 months) or a significant fraction of an animal's or human's lifetime.
Long-term exposure lasting several weeks to a lifetime.
Repeated exposure or contact with a toxic substance over a long period. The U.S. Environmental Protection Agency defines this period as a significant fraction of the animal's or human's lifetime. The Agency for Toxic Substances and Disease Registry defines chronic exposure as greater than 364 days.
the absorption of radiation (or intake of radioactive materials over a long period of time), i.e., over a lifetime.
Contact with a substance or chemical that happens over a long period of time. ATSDR considers exposures of more than one year to be chronic.
long exposure to a chemical, usually months or years.
A continuous or intermittent long-term contact between an AGENT and a TARGET. (Other terms, such as ¿long-term EXPOSURE,¿ are also used.)
Multiple exposures occurring over an extended period of time or over a significant fraction of an animal's or human's lifetime (usually seven years to a lifetime.)
A long-term exposure to a toxic substance.
exposure to a substance over a long period of time, possibly resulting in adverse health effects. Exposure Pathways Radiation Health Effects[] [ Click "BackButton" for previous location
A prolonged exposure occurring over a period of days, weeks or years.
a long-term exposure, usually occurring at low concentrations.
Repeated long-term contact with a substance.
Long-term exposure, usually lasting for a relatively long period of time (e.g. months or years).
Repeated exposure by the oral, dermal, or inhalation route for more than approximately 10% of the life span in humans (more than approximately 90 days to 2 years in typically used laboratory animal species).
Long-term, low-level exposure to a toxic chemical.
Low doses repeatedly received by the body over a long period of time. Repeated doses or exposure to a material over a relatively prolonged period of time.
Multiple exposures occurring over an extended period of time, or a significant fraction of the animal's or the individual's lifetime. This definition archived 9/30/03
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