Changes

*Primary immunodeficiencies may affect either the [[Innate Immune System - WikiBlood|innate immune system]] or the [[Adaptive Immune System - WikiBlood|adaptive immune system]]

*They are categorised by either the type or the developmental stage of the cells involved

*Lymphoid cell disorders affect [[Lymphocytes#T cells|T cells]] or [[Lymphocytes#B cells|B cells]] (or both)

|pagebody =Primary immunodeficiencies may affect either the [[Innate Immune System - WikiBlood|innate immune system]] or the [[Adaptive Immune System - WikiBlood|adaptive immune system]]. They are categorised by either the type or the developmental stage of the cells involved. Lymphoid cell disorders affect [[Lymphocytes#T cells|T cells]] or [[Lymphocytes#B cells|B cells]] (or both). Myeloid cell disorders affect phagocytic function. The severity of the immunodeficiency depends on at which stage in development the problem occurs. E.g. Defects early on in development will affect the entire immune system.

*Myeloid cell disorders affect phagocytic function

[[Lymphocytes#T cells|T cell]] deficiencies can affect both the cell-mediated and humoral response as [[Lymphocytes#T cells|T cells]] play a central role in the immune system.

*The severity of the immunodeficiency depends on at which stage in development the problem occurs

**E.g. Defects early on in development will affect the entire immune system

*[[Lymphocytes#T cells|T cell]] deficiencies can affect both the cell-mediated and humoral response as [[Lymphocytes#T cells|T cells]] play a central role in the immune system

[[Primary Innate Immunity Deficiencies]]

<categorytree mode=pages>Primary Immunodeficiency</categorytree>

[[Category:Immunodeficiencies]]

[[Category:Immunodeficiencies]]