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.
Specific progenitor cells termed mesangioblasts (which give rise to skeletal, smooth muscle and other mesenchymal cell types), originating from the hypaxial dermomyotome, has also been shown to contribute, to some extent, to the developing aorta.t was also shown that at postnatal and adult stages, stem cells from specific niches can contribute to normal and damaged smooth muscle tissue. As such, molecular signatures of the different smooth muscle cell origins are unique and respond rather differently to the same secreted cues.