治疗组一期复钙时间（均>500秒）明显延长，表明胸腔积液促凝血活性降低。
The recalcification times in therapy group were markedly prolonged ( > 500s), indicating that procoagulant activity was reduced in these LMWH-treated animals.
通过活化部分凝血激酶时间(APTT)的方法测定肝素铁纳米粒的抗凝血活性。
The anticoagulant activity of iron heparin nanoparticles were tested by activated partial thromboplastin time (APTT) assay.
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