Positive Samples: MCF7, A-549, HT-29, 293T, M21 Immunogen sequence: MAEQSDEAVK YYTLEEIQKH NHSKSTWLIL HHKVYDLTKF LEEHPGGEEV LREQAGGDAT ENFEDVGHST DAREMSKTFI IGELHPDDRP KLNKPPETLI. Cytochrome b5 is a membrane-bound member of the cytochrome b family. A heme