CGD Home Page
   Chronic granulomatous disease website. CGD is an immune system disorder which affects the phagocytes. The website has information and a message board.
   http://www.magicbydesign.com/cgdcafe/index.php

CIPO Home Page
   Canadian Immunodeficiencies Patient Organization Home Page. Information in English and French.
   http://www.cipo.ca/

Cd5 - Cd19 PID
   Cd5 - Cd19 PID, involves a complete and total lack of response to polysaccharide antibodies and an extremely high expression of Cd5+ B-cells.
   http://www.scid.net/cd5cd19pid/

How Stuff Works: Immune System
   Describes the immune system and discusses related topics such as allergies and AIDS.
   http://www.howstuffworks.com/immune-system.htm

IPOPI
   Official site of the International Patient Association for Primary Immunodeficiencies.
   http://www.ipopi.org/

Immune System Cure
   Techniques for supercharging your immune system through diet, stress reduction and nutritional supplements.
   http://theimmunesystemcure.com

ImmuneDisease.com
   In-depth information for consumers and healthcare professionals on immunology, primary immune deficiency diseases, and treatment with intravenous immune globulin.
   http://www.immunedisease.com

Jeffrey Modell Foundation
   A non-profit research foundation devoted to primary immune deficiency.
   http://www.jmfworld.com

Michigan Immunodeficiency Foundation
   Information for patients and healthcare professionals on immunology, primary immune deficiency diseases, and treatment with intravenous immune globulin.
   http://www.midf.org/

PINSA, Primary Immunodeficiency Network of South Africa
   Support for patients and families affected by PID. Includes patient stories, disease facts and diagnostic help.
   http://www.pinsa.org.za