CYTOKINE - Small, non- immunoglobulin proteins produced by monocytes and amino acids supplier for supplements lymphocytes that serve as intercellular communicators after binding to specific receptors on the responding cells. Reverse Phase Chromatography - A chromatographical separation technique primarily based on a column stationary phase coated to present non- polar hydrophobic surface. DuPont chromatography resins rapidly and efficiently elute the salts and non-anion compounds while retaining the anionic compounds. CHEMOTAXIS - Net oriented motion in a focus gradient of certain compounds.