The other way epithelial cells can necrose is via nephrotoxins, which are substances that tend to damage the epithelial tubular cells.

另一种上皮细胞坏死的方式是由于肾毒素，这些物质往往损坏肾小管上皮细胞。

In this case, what the danger would be is that the leg would lose circulation and necrose from a lack of oxygenation, not from infection.

在这种情况下，危险在于腿部会因缺氧而不是感染而失去循环和坏死。

The key distinction is that unstable angina means that the heart tissue is alive but ischemic or starving for oxygen, whereas myocardial infarction means that the areas of heart tissue have already begun to necrose or die.

两者最重要的差别是不稳定型心绞痛心脏组织是活的，但缺血/缺氧；而心肌梗死意味着该区域心组织已发生坏死。

If they're embolizing and destroying the blood vessels to the tumor, that can actually cause the tumor to necrose, at which point it would start getting smaller, and fade, and then you could operate on it.

如果他们栓塞并破坏通向肿瘤的血管，这实际上会导致肿瘤坏死，此时它会开始变小并消退，然后你就可以对其进行手术。