母体循环中存在鳞状上皮和滋养层细胞是否为afe的特异性指标？
Is the presence of squamous or trophoblastic cells in the maternal circulation pathognomonic for AFE?
鳞状上皮和滋养层细胞的存在并不一定意味着出现了AFE。
The presence of squamous or trophoblastic cells does not necessarily indicate that an AFE has occurred.
斑点状角膜营养不良病变仅累及基质层，而角膜上皮层及内皮层正常；
In fleck corneal dystrophy, the lesion only involved stroma, epithelium and endothelium levels were normal.
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