Answer:
Thymus
Step-by-step explanation:
T lymphocytes are cells of extreme need for the immune system, primarily dependent on the thymus as a pathway (the "T" derives from the T thymus, in other words, thymus-dependent).
T lymphocytes are divided into different classes, in the case of cytotoxic T cells, they are specialized cells for the recognition of antigens, producing proteins capable of killing foreign cells, cells infected by viruses and in some cases, cancer cells.