Cytokines are a group of small molecule proteins or polypeptides that are synthesized, stimulated, or secreted by immune cells (including monocytes, macrophages, T cells, B cells, NK cells ...
This valuable study reports on a novel role of PD-1 in early T cell differentiation, showing that PD-1 stimulation impairs Th2 differentiation more effectively than that of Th1, with implications for ...