肩胛下肌肌腱的组织学检查发现在组1 (SAL),组2 (PDRN),组3 (MSC)和4 (MSC + PDRN)。(A1-A4)新再生肌腱中纤维所示(黑色箭头;马森的三色的染色;X200型)组2、3和4。一些再生胶原纤维被认为在组1。(B1-B4)再生腱纤维(黑色箭头;X200型)染色1型胶原抗体组2,3,4。一些再生腱纤维组1。(C1-D4)众多BrdU -和PCNA-stained细胞(黑色箭头,X400 X200型)观察再生腱纤维组2,3,4。几个BrdU——在组1和PCNA-stained细胞观察。 (E1-F4) Numerous VEGF-positive cells and PECAM-1 positive microvascular densities (black arrows, X200) were observed in groups 2, 3, and 4. Few VEGF-positive cells and PECAM-1-positive microvascular densities were observed in group 1. MTS: Masson’s trichrome stain; COL-1: collagen type 1; BrdU: 5-bromo-2脱氧尿苷;PCNA:增殖细胞核抗原;MSC:人类脐带血液间充质干细胞;PDRN: polydeoxyribonucleotide;VEGF:血管内皮生长因子;PECAM:血小板内皮细胞粘附分子。