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The page below is a sample from the LabCE course Tumor Markers. Access the complete course and earn ASCLS P.A.C.E.-approved continuing education credits by subscribing online.

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Cancer is a group of diseases in which the uncontrolled growth and spread of abnormal cells occurs in the body. Cancerous cells are also called malignant cells. In addition to the uncontrolled overgrowth of abnormal tissues, cancerous cells may also produce a variety of both functional and abnormal products, any of which may be candidates as tumor markers.