plasminogen activator: protease produced in the kidney that converts plasminogen to plasmin and so initiates fibrinolysis
protease: any enzyme that catalyzes the splitting of proteins into smaller peptide fractions and amino acids by a process known as proteolysis
eubacteriales: one of two usually recognized orders of true bacteria; Gram-positive spherical or rod-shaped forms; some are motile; in some classifications considered an order of Schizomycetes