http://www.ncbi.nlm.nih.gov/disease/Immune.html
Immune_system Asthma Autoimmune polyglandular syndrome Crohn's_disease Digeorge_syndrome Familial_mediterranean_fever Immunodeficiency with Hyper-Igm Severe_combined_immunodeficiency THE IMMUNE_SYSTEM
fungus or parasite will occur. In severe_combined_immunodeficiency,