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  • Hair Follicles - A specialized unit located in the deep dermis where hair is created and moves outward toward the surface of the skin.
  • Helper T-Cells - A type of T-cell that activates other immune cells, including B-cells and cytotoxic T-cells.
  • Hemoglobin - A large protein found in red blood cells that carries oxygen from the lungs to the cells of the body.
  • High-Risk Melanoma - Melanoma that has a greater than 50% probability of recurring in regional lymph nodes or at distant sites.
  • Hormonal Therapy - A type of biological therapy that adds, blocks, or removes hormones from the body to slow or stop the growth of certain cancers.
  • Hospice - A special health care program that provides a combination of medical, spiritual, and psychological care to patients and their families during a terminal illness. Hospice care is usually in the home but can also be in a nursing home or hospital.
  • Hydroxyurea - A chemotherapeutic agent sometimes used for the treatment of malignant melanoma.
  • Hyperfractionation - The delivery of more than 1 dose of radiation within the same day.
  • Hyperthermia - A heating process used to enhance a drug's potency.
  • Hypofractionation - The delivery of higher doses of radiation in fewer treatments than conventional radiation therapy.