Crosby capsule

(krŏz′bē )

[William Holmes Crosby, Jr., U.S. physician, 1914-2005]
A device attached to a flexible tube that is introduced into the gastrointestinal tract per os. It is designed so that a sample of tissue may be obtained from the mucosal surface with which it is in contact. The capsule is then removed and the tissue examined for evidence of pathological changes.

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