• CIPO Canadian Immunodeficiencies Patient Organization Home Page.

• Immune Central Provides an in-depth look at how the immune system functions within the body, including news, articles, and tips.

• Immune Deficiency Foundation National, non-profit organization to improve the diagnosis and treatment of patients with primary immunodeficiency diseases through research and education.

• Immune Report ranks AIDS and auto immune system supplements based on efficacy, ease of acquisition, safety, and value.

• Immune System Cure Techniques for supercharging your immune system through diet, stress reduction and nutritional supplements.

• ImmuneDisease.com In-depth information for consumers and healthcare professionals on immunology, primary immune deficiency diseases, and treatment with intravenous immune globulin.

• IPOPI Official site of the International Patient Association for Primary Immunodeficiencies.

• Jeffrey Modell Foundation A non-profit research foundation devoted to primary immune deficiency.

• Mannose-Binding Lectin MBL Deficiency Research Fund Contains information on MBL Mannose-Binding Lectin fund that was established to help support the laboratory research of Dr. Alan Ezekowitz at Massachusetts General Hospital for MBL Deficiency.

• NORD-National Organization For Rare Disorders Offering discussions, resources, links, and synonyms for many immune deficiencies.

• PINSA, Primary Immunodeficiency Network of South Africa Support for patients and families affected by PID. Includes patient stories, disease facts and diagnostic help.

• Primary Immunodeficiency Association British information and support group for primary immunodeficiencies and other disorders of the immune system.

• The SCID Homepage Information about the disease with links to journal articles, latest research developments, and patient support.