They evolve to become very dense, hard, pustular lesions, which are filled with what turns out to be tissue debris.

它们逐渐变成粘稠,发硬,产生脓包状的伤痕,而这些粘稠的脓事实上是组织残骸

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And so that debris fills up a little spot that would feel, according to reports, because again we don't see it now, feels like a little pellet underneath your skin.

然后这些死亡细胞都填充在一个点上,会有一种,根据记录所说,因为我们,没有再见过这病,会感觉皮肤下面有个小球

耶鲁公开课 - 生物医学工程探索课程节选