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KCAS, LLC optimized a primary and secondary stimulation assay of Peripheral Blood Mononuclear Cell (PBMC)
samples from a clinical trial in order to characterize the immune response to a multi-valent peptide vaccine. In partnership with our pharmaceutical sponsor, an agreed upon set of samples were tested by KCAS, LLC to optimize a culture method, culture time course, stimulation, and re-stimulation. These samples were also used to optimize surface and intracellular staining of the following panel: CD45, CD3 CD8, PD1, CCR7, IFNγ, TNFα, IL-2 and viability dye. Upon review of the initial optimized method, the full cohort of patient samples were cultured, treated, stained, and analyzed.