İngilizce - İngilizce
hormesis teriminin İngilizce İngilizce sözlükte anlamı
- stimulation by the use of a low concentration of a toxin
- (Biyoloji) Hormesis (from Greek hormæin, meaning "to excite") is the term for generally-favorable biological responses to low exposures to toxins and other stressors. A pollutant or toxin showing hormesis thus has the opposite effect in small doses than in large doses. As an example, challenging mice with small doses of gamma ray radiation shortly before irradiating them with very high levels of gamma rays actually decreases the likelihood of cancer. There is a similar effect when dioxin is given to rats. In toxicology, hormesis is a dose response phenomenon characterized by a low dose stimulation, high dose inhibition, resulting in either a J-shaped or an inverted U-shaped dose response. Such environmental factors that would seem to produce positive responses have also been termed "eustress"