Peptide sequence: AGTNYFIKVH VGDEDFVHLR VFQSLPHENK PLTLSNYQTN KAKHDELTYF Sequence homology: Dog: 92%; Horse: 85%; Human: 100%; Mouse: 83%; Pig: 79%; Rabbit: 77%; Rat: 79%. Cystatin A (also designated STF1, STFA, stefin A or cystatin AS) and cystatin B (a