The present invention provides an isolated antibody that binds a fibrin or fibrinogen λC domain. In various aspects, the antibody inhibits microglial adhesion to the fibrin or fibrinogen λC domain, inhibits Mac-1 binding to the fibrin or fibrinogen λC domain, and/or suppresses clinical symptoms, wherein pathology is selected from following group: disseminated sclerosis, rheumatoid arthritis and cancer.