Exudate

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Dictionary Meaning and Definition on 'Exudate'

Exudate Meaning and Definition from WordNet (r) 2.0
    exudate n : a substance that oozes out from animal or plant pores [syn: exudation] v : release (a liquid) in drops or small quantities; "exude sweat through the pores" [syn: exude, transude, ooze out, ooze]
Exudate Meaning and Definition from Webster's Revised Unabridged Dictionary (1913)
    Exudate \Ex*u"date\, n. A product of exudation; an exuded substance.
Exudate Meaning and Definition from Webster's Revised Unabridged Dictionary (1913)
    Exudate \Ex*u"date\, v. t. & i. [See Exude.] To exude. [Obs.] --Sir T. Browne.
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Wikipedia Meaning and Definition on 'Exudate'


An exudate is any fluid that filters from the circulatory system into lesions or areas of inflammation. It can apply to plants as well as animals. Its composition varies but generally includes water and the dissolved solutes of the main circulatory fluid such as sap or blood. In the case of blood: it will contain some or all plasma proteins, white blood cells, platelets and (in the case of local vascular damage) red blood cells. In plants it can be a healing and defensive response to repel insect attack or it can be an offensive habit (to repel other incompatible or competitive plants). Organisms that feed on exudate are known as exudativores for example, Vampire Bats who exhibit hematophagy.

Exudate is derived from exude, "to ooze,"

There is an important distinction between transudates and exudates. Transudates are caused by disturbances of hydrostatic or colloid osmotic pressure, not by inflammation. They have a low protein content in comparison to exudates. Medical distinction between transudates and exudates is through the measurement of the specific gravity of extracted fluid. Specific gravity is used to measure the protein content of the fluid. The higher the specific gravity, the greater the likelihood of capillary permeability changes in relation to body cavities. For example, the specific gravity of the transudate is usually less than 1.012 and a protein content of less than 2 gm/100mL (2 gm%). Rivalta test may be used to differentiate an exudate from a transudate. It is not clear if there is a distinction in the difference of transudates and exudates in plants.

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