Another subcategory of these cells recognize proteins presented by the class I major histocompatibility complex and destroy infected cells.
Tak wah Mak and others at the Ontario Cancer Institute cloned receptors found on this type of cell using the MOLT-3 line and compared the results to the CEM and Jurkat lines of this type of cell. Mutated cells of this type migrate to the skin in Sezary syndrome and other forms of mycosis fungoides. Gamma-delta cells of this type have a poorly understood function, and may have played an important role in the early development of an immune system. Another subcategory of these cells recognize proteins presented by the class I major histocompatibility complex and destroy infected cells. The CD4+ cells of this type are infected by HIV, and AIDS patients have especially low numbers of them. Exemplified by "cytotoxic" and "helper" ones, for 10 points, name this type of white blood cell which matures in the thymus. Â 
Tak wah Mak and others at the Ontario Cancer Institute cloned receptors found on this type of cell using the MOLT-3 line and compared the results to the CEM and Jurkat lines of this type of cell.
T cell (prompt on white blood cells or lymphocytes)