The<unk>  must not get into blood vessels, as this could lead to clotting in the form of thromboembolism or disseminated intravascular coagulation, or to anaphylaxis (a severe allergic reaction).
Fibrin glue
Polymer sponge
Angiozyme
Surgicel
Celadrin 
Tissue plasminogen activator
Surgibox
Gauze sponge