NCI Dictionary of Cancer Terms
The NCI Dictionary of Cancer Terms features 8,380 terms related to cancer and medicine.
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- helper T cell
- listen (HEL-per … sel)
- A type of immune cell that stimulates killer T cells, macrophages, and B cells to make immune responses. A helper T cell is a type of white blood cell and a type of lymphocyte. Also called CD4-positive T lymphocyte.