<unk><unk>  (NK)<unk> s deficiency is a rare condition characterized by either the deficiency, absence, or malfunction of NK<unk> s, without the involvement of other types of immunological abnormalities and in the absence of secondary etiologies such as medications or viral infections. NK<unk>  deficiency is considered a type of immunosuppression.  Acquired NK<unk> s deficiency is not an uncommon finding among AIDS patients.
Natural killer cell deficiency
Leukocyte adhesion deficiency
IgG deficiency
Primary immunodeficiency
Congenital defects of phagocytes
Humoral immune deficiency
Combined immunodeficiency
Severe combined immunodeficiency