undegraded
adj. 未经碰撞的，未慢化的
例句
Results At postoperative 8 weeks the engineered tendon assumed white and shiny, with parallel arrangement of the collagen tissue. Undegraded PGA and a few inflammatory cells could still be seen.
结果术后8周见组织工程化肌腱呈白色、有光泽，组织学可见胶原组织平行排列，但仍可见未降解的PGA及少量炎性细胞；
