Figure 4

CD1A validation on protein level using immunohistochemical staining. (a) Representative CD1A expression patterns in a long-term relapse-free survivor with strong expression (left) and a short-term relapse-free survivor without expression (right). (b) CD1A expression was quantified as fraction of positive tumor cells as well as contribution of positive immune cells to the tumor area in short-term (cases, red) versus long-term relapse-free survivors (controls, blue).