Multiplexed luminex analysis shows a GVHD-specific cytokine secretion profile. (A) Secretion patterns of IL-1RA, IL-18, IFNγ, and CCL4 in both untreated (red traces) and CoBS-treated (black traces) transplant recipients. (B) Secretion patterns of IL-2, IL-8, monocyte chemotactic protein 1 (MCP-1), and IL-12/23 in both untreated (red traces) and CoBS-treated (black traces) transplant recipients. (C) Secretion patterns of tumor necrosis factor, IL-10, IL-1β, transforming growth factor (TGF), and IL-17 in both untreated (red traces) and CoBS-treated (black traces) transplant recipients.