The phrase "various cytokines" refers to different types of proteins that help cells communicate with each other to coordinate a response in the immune system. Full definition
We are also measuring transcript levels of various cytokines / chemokines in nasal washes to define how RSV strains impact bronchiolitis, inflammation, and wheezing. (jcvi.org)
Such genes might include those for various cytokines — substances produced by cells of the immune system — such as tumour necrosis factor, interleukins and interferons. (newscientist.com)
Our immune system also stimulates various cytokines and interleukins to mobilize the attack against these foreign invaders. (optimizetothrive.com)