Please answer the following question: Answer the following question given this paragraph: Organs of the lymphatic system include the tonsils, thymus gland and spleen. The thymus gland produces T cells or T-lymphocytes (see below) and the spleen and tonsils help in fighting infections. The spleen's main function is to filter the blood. The spleen also detects viruses and bacteria and triggers the release of pathogen fighting cells. Q: What does the thymus gland produce? Choices: - b cells - insulin - hormones - t cells A:
A:
t cells