Isoprene
One of the major components that makes up natural rubber and is used to make synthetic rubbers. It is also emitted from plants and trees, has been detected in tobacco smoke and automobile exhaust.
Isoprene is a possible carcinogen (cancer-causing agent). The US government in 2000 classified it as “reasonably anticipated to be a human carcinogen.” In laboratory animal studies of isoprene, cancer was observed in multiple organ sites following long-term inhalation exposures.
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- Isotonic exercise
Exercise when a contracting muscle shortens against a constant load, as when lifting a weight. Isotonic exercise is one method of muscular exercise. In contrast, isometric exercise is when muscular contractions occur without movement of the involved parts of the body. Isotonic comes from the Greek “iso-“, equal + “tonos”, tone = maintaining equal (muscle) […]
- Isotonic solution
A solution that has the same salt concentration as cells and blood. Isotonic solutions are commonly used as intravenously infused fluids in hospitalized patients.
- Isotope
A form of a chemical element that has a different-from-normal atomic mass. Isotopes are used in a number of medical tests because they can produce images of tissues that can be used to detect diseases or conditions.
- Isotopic
Referring to an isotope, a form of a chemical element with the same atomic number as another element but having a different atomic mass. From the Greek “iso-“, equal, the same + “topos”, place. Isotopes are used in a number of medical tests.
- Italian disease
Syphilis. Depending upon someone’s thoughts as to where the disease came from, syphilis was also known as the French, Spanish, German and Polish disease.