These are the main cells that make up lymphoid tissue, a major part of the immune system. Lymphoid tissue is found in lymph nodes, the thymus, the spleen, the tonsils and adenoids, and is scattered throughout the digestive and respiratory systems and the bone marrow.Lymphocytes develop from cells called lymphoblasts to become mature, infection-fighting cells.hese are the main cells that make up lymphoid tissue, a major part of the immune system. Lymphoid tissue is found in lymph nodes, the thymus, the spleen, the tonsils and adenoids, and is scattered throughout the digestive and respiratory systems and the bone marrow.
Comcast Corporation (formerly registered as Comcast Holdings) is an American global telecommunications conglomerate that is the largest broadcasting and cable television company in the world by revenue.
Comcast Headquarters Information. Comcast is a cable, television, Internet and media company offering services to both residential and commercial customers. Though telecommunications customers may know Comcast as a cable company, Comcast also owns companies in the sports, entertainment and venture capital markets. There is a dedicated website for Comcast headquarters [+] .