tumour marker

Description

A substance in the body that may indicate the presence of a certain type of cancer.

Tumour markers may be produced by cancer cells or by the body in response to the cancer. They can be found in blood or other body fluids and may be used to detect cancer or monitor a person’s response to treatment.

For example, prostate-specific antigen (PSA) can be used as a tumour marker for prostate cancer.

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