Cells of lymphatic or immune system, development to final destination :summary

Cells of lymphatic or immune system:

1. Different types of lymphocyte: a)T lymphocyte :are four types   i) helper T cells ii) Cytotoxic T cells iii) Suppressor T cell iv) Memory T cell b) B lymphocyte: produce plasma cells which secrete antibodies         c) Natural killer cells  (Helper T lymphocyte stimulate the development of other lymphocytes so it is known as master lymphocyte,in HIV this cell is destroy by HIV virus, so other cells of immune system became inactive)

2. Antigen presenting cells: a) Macrophages  b) Kupffer cells of the liver  c)Langerhan’s cells in the epidermis d) Dendritic cells of spleen and lymph nodes

Development of Lymphocyte

Lymphocyte	Origin	Maturation and differentiation	Final destination
T lymphocyte	Bone marrow	Thymus	Mid & deep zone of lymph node, In periarterial lymphatic sheath of spleen, mucosa associate lymphatic tissue
B lymphocyte	Bone marrow	Bone marrow	superficial zone of lymph node, outside the periarterial lymphatic sheath of white pulp of spleen, mucosa associate lymphatic tissue