也许正是口腔细菌进入了血液，粘附在心血管的脂肪斑块上，导致凝块形成堵塞血管。
It may be that oral bacteria enter the bloodstream, attach to fatty plaques in the coronary arteries and cause clots to form.
金属支架的功能障碍可以由胆管内的结晶凝块，细菌性污泥，胆盐，及肿瘤压迫或肿瘤直接侵入支架。
Malfunction of the metallic stent can be caused by encrustation of crystals, bacterial sludge, bile salts, and tumor compression or tumor ingrowth.
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