migration

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mi·gra·tion

(mī-grā'shŭn),
1. Passing from one part to another, said of certain morbid processes or symptoms.
2. Synonym(s): diapedesis
3. Movement of a tooth or teeth out of normal position.
4. Movement of molecules during electrophoresis, centrifugation, or diffusion.
[L. migro, pp. -atus, to move from place to place]

migration

/mi·gra·tion/ (mi-gra´shun)
1. an apparently spontaneous change of place, as of symptoms.

migration

[mīgrā′shən]
Etymology: L, migrare, to wander
the passage of the ovum from the ovary into a fallopian tube and then into the uterus.

migration

Informatics
The process of moving an information system and/or software—including data—from an old to new operational environment in accordance with a software quality system.

Genetics
The movement of one or more individuals between reproductively isolated populations. 

Vox populi
Movement of one or more animals from point A to point B; as in, the migration of birds.

mi·gra·tion

(mī-grā'shŭn)
1. Passage from one part to another, said of certain morbid processes or symptoms.
2. Synonym(s): diapedesis.
3. Movement of a tooth or teeth out of normal position.
4. Movement of molecules during electrophoresis.
5. Geographic spread of disease-causing agents, rectors, or populations.
[L. migro, pp.-atus, to move from place to place]

migration

any cyclical movements (usually annual) that occur during the life history of an animal at definite intervals, and always including a return trip from where they began. The exact derivation of the word is from the Latin ‘migrate’ meaning to go from one place to another, but biologically a return journey is part of the accepted definition of the term, the outward journey being termed EMIGRATION and the inward journey IMMIGRATION.

mi·gra·tion

(mī-grā'shŭn)
1. Movement of a tooth or teeth out of normal position.
2. Passing from one part to another, said of certain morbid processes or symptoms.
[L. migro, pp.-atus, to move from place to place]

migration

movement of living things from one place to another by their own volition. Also used to describe movement of nonliving biological material, e.g. migration of protein in electrophoretic media.

migration inhibition factor
see leukocyte migration-inhibition factor, macrophage inhibition factor, migration inhibition test (below).
migration inhibition test
an in vitro test for detection of cell-mediated immunity (or delayed hypersensitivity) in which peritoneal exudate cells (lymphocytes and macrophages) are packed in capillary tubes and placed in a medium; if the medium contains an antigen to which the lymphocytes are primed, macrophage migration from the tubes is inhibited by lymphokines, particularly macrophage inhibiting factor, released by the antigen stimulated lymphocytes.