T-cell immunotherapy is a treatment that strengthens the immune system. Acute lymphoblastic leukemia, acute myeloid leukemia, brain, and central nervous system cancers, neuroblastoma, and solid tumors are among the disorders being studied in clinical trials. T cells are immune cells
source https://www.openpr.com/news/2361180/the-global-t-cell-immunotherapy-market-2021-post-covid