ab17857 recognizes a 60kDa non-glycosylated protein component of mitochondria found in human cells. It can be used to stain the mitochondria in human cell or tissue preparations and can be used as a mitochondrial-marker in subcellular fractions. ab17857 also detects the organelles within mitochondria; characteristic ('spaghetti'-like) mitochchondrial staining pattern is observed in the cytoplasm of normal and malignant human cells.