To obtain a sample of lymph tissue for biopsy, a needle is inserted within the lymph node and a sample of fluid is sent to the laboratory. The laboratory test isolates and identifies organisms that cause infection. The test may be performed if plague is suspected, but it is rarely done otherwise.

Review Date: 12/6/2001 12:00:00 AM Reviewed By:A.D.A.M. Medical Illustration Team

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