Figure 2: Levels of heme transporter and hemoproteins are enhanced in cancer cells and tumor xenografts. (A) Protein levels of heme transporter HCP1 in normal and cancer cells. (B) Protein levels of HCP1 in HCC4017 (HCC) cell line and various human tumor xenograft samples. (C) Protein levels of cytoglobin in normal and cancer cells. (D) Protein levels of cytoglobin in HCC4017 (HCC) cell line and various human tumor xenograft samples [10].