Disclosed is a method of targeting reagents to the locus of a clot, and a family of substances that have affinity for fibrin. The method and substances exploit the discovery that the binding sites on protein A from Staphylococcus aureus have a significant affinity for fibrin. These fragments, analogs...http://www.google.fr/patents/US5011686?utm_source=gb-gplus-shareBrevet US5011686 - Thrombus specific conjugates