kidney glomerulus morphology trait mesangial cell morphology trait Any measurable or observable characteristic related to the shape, structure, color, or pattern of the phagocytic cells in the capillary tuft of the renal glomerulus, interposed between endothelial cells and the basement membrane in the central or stalk region of the tuft. Trait.ontology VT:0005327 deep cell morphology trait intercapillary cell morphology trait