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 also owns NBCUniversal, which includes the NBC TV network, movie maker Universal Studios, and the Universal theme parks. In 2015 Comcast withdrew its $45 billion bid for Time Warner Cable as regulators voiced opposition. Film fact: Three of the company's 2015 movies grossed more than $1 billion each.