Cytokines are low molecular weight, secreted proteins or peptides. They are produced by numerous cell types and have a very broad range of functions, such as hematopoiesis, cell growth and differentiation, angiogenesis, tissue remodeling, wound healing, effector immune cell activity, and life/death decisions. Their key role in the proliferation and differentiation of living cells makes cytokines could be used to induce stem cell differentiation, as growth supplements in culture medium, and in various assays performed on living cells. Cytokines are essential research reagents and necessary for the maintenance of living cells cultured in a laboratory environment. Creative Bioarray, as a trusted partner, can provide a large variety of cytokines, both research grade and GMP grade, to meet your specific needs, especially for in vitro cell culture.