Cytokines and Growth Factors

Cytokines and growth factors are proteins that send signals between cells. They tell cells when to grow, divide, or start an immune response. In practice, labs use them in culture work, for example to guide stem cells, test immune activity, or model disease. What matters most is that they stay active and consistent. If they’re pure, folded the right way, and low in endotoxin, results are easier to trust. Stable proteins mean fewer failed assays and cleaner data.