lymphatic system morphology trait caripark 2010-05-17T04:31:50Z Trait.ontology VT:0010071 lymphoid system morphology trait Any measurable or observable characteristic related to the shape, structure, color, or pattern of the system of lymphoid channels and tissues that drains extracellular fluid from the periphery via the thoracic duct to the blood. hemolymphoid system morphology trait circulatory system morphology trait