Positive Samples: U-251MG, HepG2, HeLa, Mouse intestine, Mouse brain, Mouse heart, Mouse kidney, Rat liver Immunogen sequence: MLRQIIGQAK KHPSLIPLFV FIGTGATGAT LYLLRLALFN PDVCWDRNNP EPWNKLGPND QYKFYSVNVD YSKLKKERPD F. Cytochrome c oxidase (COX, complex I