SECTION FOUR - Complement Deficiencies.

The article presents various research papers related to complement deficiencies, published in an earlier issue of the journal "Clinical & Experimental Immunology". One of the abstracts talk about acquired deficiency in C1-inhibitor associated with an undifferentiated gastric adenocarcinoma. Acquired deficiency in C1-inhibitor (C1-INH) clinically manifests similar to hereditary angioedema and is usually associated with a B cell malignancy or is sometimes characterized by an autoantibody towards the C1-INH molecule.