尸斑 Livor mortis
（重定向自Postmortem lividity）
尸斑（Livor mortis）是指动物死亡后，血液循环停止，血液停留在尸体的低处，红血球从血清中进一步分离沉积，在表皮下形成可见的紫红色淤斑现象。
人类的尸斑一般在死亡后0.5-2小时开始出现，5-6小时的时候融合成大片。6小时以前的尸斑施以指压可以消失，24小时的时候完全固定。法医学上尸斑可以用来推测死亡时间和尸体是否被移动。
Postmortem lividity
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英语百科
Livor mortis 尸斑
（重定向自Postmortem lividity）
Livor mortis (Latin: livor—"bluish color," mortis—"of death"), postmortem lividity (Latin: postmortem—"after death", lividity—"black and blue"), hypostasis (Greek: hypo, meaning "under, beneath"; stasis, meaning "a standing") or suggillation, is one of the signs of death. Livor mortis is a settling of the blood in the lower (dependent) portion of the body, causing a purplish red discoloration of the skin. When the heart stops functioning and is no longer agitating the blood, heavy red blood cells sink through the serum by action of gravity.
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