Schmidt D, Mackay B
Ultrastruct Pathol. 1982 Jul-Sep;3(3):269-83. doi: 10.3109/01913128209016653.
Normal human tendon sheath and synovium were studied by scanning an transmission electron microscopy. The lining cells of the two tissues appear to be identical ultrastructurally. The most superficial cells (B-cells) possess long cytoplasmic extensions that clothe the membrane surface. Intermingled with deeper B-cells are the so-called A-cells, which have similar cytoplasmic features but lack long processes and instead have many filopodia. the frequent occurrence of intermediate forms indicates that the two cells form part of a morphologic spectrum. Comparison with cells of tumors that have been ascribed to synovium or tendon sheath (synovial sarcoma, epithelioid sarcoma, clear cell sarcoma) do not reveal any close similarities that might support a histogenetic relationship.
通过扫描电子显微镜和透射电子显微镜对正常人类腱鞘和滑膜进行了研究。这两种组织的衬里细胞在超微结构上似乎是相同的。最表层的细胞（B细胞）具有长的细胞质突起，覆盖着膜表面。与较深层的B细胞混合的是所谓的A细胞，它们具有相似的细胞质特征，但没有长突起，取而代之的是许多丝状伪足。中间形式的频繁出现表明这两种细胞构成了形态谱的一部分。与被归因于滑膜或腱鞘的肿瘤细胞（滑膜肉瘤、上皮样肉瘤、透明细胞肉瘤）进行比较，未发现任何可能支持组织发生关系的密切相似之处。
