Figure 7. Thrombus in a Vein (Arrows), Identified by the Absence of Elastic Fibers (Resorcin?Fuchsin Elastic Tissue Stain, ?125).In contrast, a nearby artery contains internal elastic fibers (arrowhead).

• 图7.；血管缺乏弹性纤维，证明为静脉，并见静脉血栓（箭头）。相反，附近的动脉存在弹性纤维。