However, other studies demonstrated an important role of γδ T lymphocytes in adaptive response since they recognize antigens presented on the surface of antigen-presenting cells (APCs), and they have cytotoxic effect mediated by expression of granulysin [ 20] and perforin [ 19, 21].
T cells become activated upon engagement of their TCRs by a cognate peptide-MHC ligand presented on the surface of an antigen-presenting or target cell.
10, 11 Activation of the immune system begins when a T-cell receptor recognizes and binds a foreign compound, or antigen, that is presented on the surface of an antigen-presenting cell.
Consequently, the simplest descriptions of the star patterns and of the motions of heavenly bodies are those presented on the surface of a sphere.
When T cells are restimulated by this antigen presented on the surface of the macrophages (or on other cells that can express class II MHC molecules), the T cells secrete cytokines that recruit and activate lymphocytes and phagocytic cells, which carry out the cell-mediated immune response.
The formation of the NiSi nanoparticles is also clearly presented on the surface along the nanowires.
At low small incident angles, the droplet sizes are randomly distributed and big dots are presented on the surface.
A key test is the interaction between the T cell receptor and the body's own (or "self") peptides, presented on the surface of other cells.
The position of the six analyzed coordinates of the real spherical functions can be presented on the surface hyperspherical function 3D (Figure 6, using the software Mathematica).
It could be construed from the GC analysis that polar solvent can cover the reactive sites presented on the surface of ZnO NPs, including Bronsted and Lewis sites.
However, at 600°C annealing temperature, surface smoothness and uniformity reduce dramatically and some void space is presented on the surface.
