The Pathology reference article from the English Wikipedia on 24-Apr-2004
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Pathology

Pathology is the study of disease. It is a form of science that involves testing samples and diagnosing physical health problems from their evidence. Pathologists are skilled in interpreting test results and physical evidence.

See also:

Speech pathology is not usually linked to the speciality of pathology being a quite separate area mostly involved in helping patients with stroke or speech impediments.