However, blood transfusion might cause relevant adverse effects, dissemination of infectious diseases and medical disputes, etc, which make the transfusion insecure.
而输血可能引起相关不良反应、传播传染病性疾病以及引起医疗纠纷等，使输血存在不安全因素。
2
Cancer cells may leave the primary tumor by one of two routes: either through hematogenous dissemination via blood circulation or by dissemination via the lymphatic system.