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.
Depending upon location, neural crest cells give rise to most of the peripheral nervous system, as well as various non-neural tissues, like craniofacial bone and cartilage, the thymus and parathyroid glands, and the cardiac outflow tract â in short, all of the tissues that are affected in DiGeorge syndrome.
Glial cells in Alzheimer's disease: preferential effect of APOE risk on scattered microglia.Saitoh T(1), Kang D, Mallory M, DeTeresa R, Masliah E. Author information: (1)Department of Neurosciences, University of California-San Diego, La Jolla 92093-0624, USA.lial cells in Alzheimer's disease: preferential effect of APOE risk on scattered microglia.