MSR1 and breast carcinoma: Yuko Miyasato et al. used immunohistochemistry to detect protein expression and found that the density of CD204-positive TAMs was higher than that of CD163-positive macrophages in 149 breast cancer tissues in addition to being significantly related to triple-negative cancer cells and the Ki-67 index [32]; this also indicates the importance of CD204 in different subtypes of breast cancer.