Your specimen, weather it be a skin biopsy, tonsil and adenoids, moles, polypoid tissue fragments, lymph nodes, or organs such as prostate or colon are excised and analyzed for study. Either of these organs or tissue fragments surgically cut into or removed will end up into the pathology department transported in a container filled with a liquid fixative called formalin, accompanied by a requisition that denotes what the specimen is and where it is from.
The Pathologist carefully examines these specimens for any abnormalities; taking thin sections and placing it into cassettes, perhaps as many as 1 to 26, labeled from A to Z for transport to the histology department for the production of microscopic slides. These slides are then read for a more closer observation or detailed investigation.