The lymphocytes become immunocompetent when the thymus secretes hormones. Lymphocytes are white blood cells that are found in a vertebrate's immune system.
The thymus causes T lymphocytes (T cells) to become immunocompetent by secreting hormones that promote their development and maturation process.
T cells become immunocompetent in the thymus, where they undergo maturation and selection processes to ensure proper functioning and self-tolerance. Once they have completed their development in the thymus, they migrate to peripheral tissues to carry out immune responses.
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The two main immunocompetent cells are B-lymphocytes (B-cells) and T-lymphocytes (T-cells). B-cells are responsible for producing antibodies, while T-cells have various roles including helping B-cells produce antibodies and directly killing infected cells.
Directly from my anatomy and physiology book - Marieb & Hoehn Eighth Edition: "Lymphocytes originate in red bone marrow from hematopoietic stem cells." " B cells become immunocompetent and self-tolerant in the bone marrow."
Malignant lymphocytes multiply uncontrollably and do not perform their normal functions.
Immature lymphocytes are formed in the bone marrow and then migrate to lymphoid tissues where they mature into T or B cells. In these tissues, they are exposed to antigens and undergo further development to become part of the immune response.
When B and T cells are fully developed and mature, they are described as being immunocompetent, meaning they are capable of recognizing antigens and mounting an immune response.
Lymphocytes are found concentrated in a few places in the body. Lymph Nodes Spleen Appendix & intestines. If lymphocytes become cancerous, they are called a lymphoma. But, since lymph nodes are part of a fluid filtration system they are a frequent place for other cancers to metastasize.
T lymphocytes and B lymphocytes
lymphocytes :)