The TNF family,
of which Tumor Necrosis Factor Alpha (TNF-A), is the prototype, contains more
than 17 cytokines with important functions in adaptive and innate immunity.
Interferons: Interferon comprises a group of proteins produced by
virus-infected cells.
Did you know?
Interferons were originally called
this because of their ability to interfere with viral replication in
previously uninfected tissue culture cells.
Cytokines
are small soluble proteins secreted by cells that can alter the behavior or
properties of the secreting cell itself or of another cell. In this section, we
will be discussing interleukins, interferons, and tumor necrosis factor.
·Developing
thymocytes pass through a series of distinct stages which are marked by changes
in the expression of T cell receptor, cell-surface proteins such as the CD3,
CD4, and CD8.