There is more collagentissue on the surface of pulmonary patch.
肺动脉补片腔面新内皮细胞和较多的胶原纤维相混杂。
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Results At postoperative 8 weeks the engineered tendon assumed white and shiny, with parallel arrangement of the collagentissue. Undegraded PGA and a few inflammatory cells could still be seen.
When vessel walls are damaged, collagen and tissue factor are exposed, and circulating platelets adhere via von Willebrand factor and undergo a change in shape with the accompanying release of ADP.