lymphocytes

Tumour infiltrating lymphocytes

Tumour infiltrating lymphocytes (TILs) are a type of immune cell that has moved from the bloodstream into a tumour. They are a component of the body’s immune response, which aims to identify and attack cancer cells. Immune checkpoint inhibitors (such as PD-L1 inhibitors) prevent cancer cells from blocking the natural activity of tumour infiltrating lymphocytes. …
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Lymphocytosis

What is lymphocytosis? Lymphocytosis is a word pathologists use to describe an increased number of specialized immune cells called lymphocytes either in the blood or inside an organ. Organs that commonly show lymphocytosis include the stomach, small bowel, and colon. Lymphocytes normally help the body fight off infections caused by viruses and bacteria. However, increased …
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