Definition is a rhetorical mode that can be used in something smaller or shorter than a full paper. You can use extended definition for several paragraphs only in a paper of much greater length. You also can add to a paper a one-paragraph definition--like a brief encyclopedia definition.
Immunodeficiency: Therapies include thymus transplantation and adoptive transfer of mature T cells (ATMTC) for individuals with complete DiGeorge syndrome and appropriate prophylaxis measures and monitoring autoimmune complications for incomplete or partial DiGeorge syndrome.
The inherited causes are related to defects in the genes that play a role in lymphocyte development. 1  Some key examples of these diseases are: 2  DiGeorge anomaly. 3  Wiskott-Aldrich syndrome. 4  Severe combined immunodeficiency syndrome. 5  Ataxia-telangiectasia.