blood protein analysis blood cytokine analysis 2018-01-17T15:35:54Z Any method which measures one or more cytokines, any of a large group of low-molecular-weight proteins (~5-20 kDa in size) secreted by various cell types. Cytokines are involved in cell-to-cell communication, in coordinating antibody and T cell immune interactions, and in regulating immune reactivity. Cytokines include colony-stimulating factors, interferons, interleukins, lymphokines, and members of the TNF and TGF-beta superfamilies. MMO:0000629 Only for use when the specific method of measuring the cytokine such as ELISA, EIA or RIA, is not given. jesmith measurement_method_ontology