CYTOKINE - Small, non- immunoglobulin proteins produced by monocytes and bulk amino acids manufacturer lymphocytes that serve as intercellular communicators after binding to specific receptors on the responding cells. Reverse Phase Chromatography - A chromatographical separation methodology based on a column stationary section coated to provide non- polar hydrophobic floor. DuPont chromatography resins quickly and efficiently elute the salts and non-anion compounds whereas retaining the anionic compounds. CHEMOTAXIS - Net oriented motion in a focus gradient of sure compounds.