text_1: Certain immunomodulator-human dialyzable leukocyte extract (hDLE) peptides are recognized by toll-like receptors (TLRs) on macrophages and dendritic cells.
text_2: CD1b+ dendritic cells were expanded by TLR-mediated upregulation of granulocyte-macrophage colony-stimulating factor (GM-CSF) and its receptor, promoted T cell activation and secreted proinflammatory cytokines.