among the species of fibrin studied , monomer lacking fibrinopeptide a alone ( alpha-fibrin ) underwent very rapid clearance by a saturable mechanism that was not evident in relatively sluggish clearance of monomer lacking either fibrinopeptide b alone ( beta-fibrin ) or both fibrinopeptides a and b ( alpha beta-fibrin ) .
C0016022
fibrinopeptide a
C0015982
fibrin