Medical Intelligence QuizChallenge Yourself, Build Your Knowledge Featured Breast Cancer Immunohistochemistry Considerations Question 1 of 5 High expression of which protein occurs in up to 75% of invasive breast cancer carcinomas? Choose one Estrogen receptor (ER) Progesterone receptor (PR) Human epidermal growth factor (HER2) None of these (triple-negative breast cancer [TNBC])
