Figure 7From: Retinoblastoma tumor suppressor pathway in breast cancer: prognosis, precision medicine, and therapeutic interventions Representative staining patterns observed in triple-negative breast cancer. (A,B,C) One case retains intact retinoblastoma tumor suppressor (RB) and the relatively low levels of p16ink4a as observed in most tissues. (D,E,F) The other case has lost RB and expresses very high levels of p16ink4a.Back to article page