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.
Top 4 Companies Owned by Comcast (CMCSA) By J. William Carpenter | October 12, 2015 â 11:36 AM EDT. Comcast Corporation (NASDAQ: CMCSA) is an American telecommunications and media conglomerate. It is the biggest cable company and the biggest broadband Internet provider in the United States. In 2014, Comcast reported nearly $69 billion in revenue, including about $44 billion from its cable business and about $25 billion from its media- and entertainment-related businesses.