After conducting various experiments, UCLA researchers found that human stem cells can be genetically engineered and turned into HIV-fighting cells, and these cells can attack infected cells in living organisms. . This study has shown for the first time that stem cell engineering can be effective in suppressing this virus in living animal tissues. In this way, they took CD8 cytotoxic T lymphocytes, which are also known as killer T cells, from HIV-infected people and found that there is a molecule called the T cell receptor that these T cells recognize and kill. HIV-infected cells guide. However, these T cells, although they are able to destroy HIV-infected cells, but their amounts are not enough to clear the whole body of this virus. Researchers cloned this receptor and used it for genetic engineering of human blood stem cells. They placed the engineered stem cells into human thymus tissue transplanted into mice and investigated the reactions in the living organism. The engineered stem cells developed into a large population of mature, multifunctional HIV-specific CD8 cells that could specifically attack target cells containing HIV proteins.