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Differential cytoplasmic staining of a Novel Target showing expression in a subset of tumor cells. Some areas of tumor are negative and other areas are positive.
Heterogeneity
Intra-Tumor variation showing differential staining of targets within tumor tissues
Differential cytoplasmic staining of a Novel Target  within Hepatocellular Cancer.
Differential nuclear staining of a Novel Target  within Breast Cancer.
αV Integrin IHC in Ovarian Cancer. Plasma membrane staining is detected in tumor cells. No staining is detected in stroma.
αV Integrin IHC in Colon Cancer. Plasma membrane staining is detected in stroma. No staining is detected in tumor cells.
Inter-Tumor variation showing differential staining of the same target within different tumor tissues