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作者讨论了长间距胶原的超微结构特征和它在肿瘤鉴别诊断中的意义。经电镜观察分析，发现有三种类型的长间距胶原存在，即：小体型、疏散型和单股型。小体型和疏散型仅存在于间叶起源的瘤组织内，而不存在于上皮起源的瘤组织内。因此，初步设想长间距胶原可作为癌与肉瘤的鉴别点。
The authors discuss the ultrastructural characteristics of long-distance collagen and its significance in the differential diagnosis of tumors. Through the electron microscope observation and analysis, it was found that there are three types of long-pitch collagen, namely: small body type, evacuation type and single strand type. Small and evacuated forms exist only in the neoplastic tissues of the mesenchymal origin but not in the neoplastic tissues of epithelial origin. Therefore, it is initially assumed that long-pitch collagen can be used as a distinguishing point between carcinoma and sarcoma.