dendritic cell morphology trait myeloid dendritic cell morphology trait Any measurable or observable characteristic related to the shape, structure, color, or pattern of phagocytic cells of the myeloid lineage that capture antigens in the periphery and then migrate to the lymphoid organs and secrete cytokines to initiate immune responses. Trait.ontology DC1 morphology trait VT:0006173 mononuclear phagocyte morphology trait