Immunogen sequence: MMCGAPSATQ PATAETQHIA DQVRSQLEEK ENKKFPVFKA VSFKSQVVAG TNYFIKVHVG DEDFVHLRVF QSLPHENKPL TLSNYQTNKA KHDELTYF; Positive Samples: HepG2, SW480, DU145, A-549, A-431, MCF7; Cellular Location: Cytoplasm, Nucleus. Cystatin A (also designated