BIOC21H3 Lecture Notes - Splenomegaly, Histocompatibility, Infectious Mononucleosis
23 Apr 2014
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Lymphatic circulation carries fluid in tandem with your blood vessels. Lymphatic fluid is mostly made up of water! Antigen: a fragment of a cell or bacteria/virus that has been broken down by antigen presenting cells: foreign body is engulfed by a macrophage and broken down has short units of. 9 10 polypeptides fragments it can display on the surface: t lymphocytes have to recognize i f the peptides are part of the body"s own system or different. Lymph nodes are areas or aggregations of lymphatic tissues where these antigen carrying cells can interact with larger popns of the immune system: we consider these to be secondary lymphatic organs. T lymphocytes fully derived in the thymus. Immunocompetent: able to function for the immune system. Lymphocytes in secondary lymph organs wait for antigen presenting cells to come display something that they can have an interaction with. Areas around the throat, armpits drainage areas.
