Figure 2From: Indoleamine 2,3-dioxygenase (IDO) is frequently expressed in stromal cells of Hodgkin lymphoma and is associated with adverse clinical features: a retrospective cohort study Double immunohistochemistry with IDO and CD68/CD163 in classical Hodgkin lymphoma. Positive immunoreactivity of IDO (red color) is colocalized with CD68 (A) or CD163 (B) (both, brown color) in the cytoplasm of macrophages or dendritic cells.Back to article page