Moreover, the protein and mRNA expression of EIF3B were examined in different types of breast cancer cell lines, including human breast epithelial cell lines (MCF10A), luminal breast cancer cells (MCF7), and T47D), and triple-negative breast cancer cells (MDA-MB-231 and BT549) (Figure 5(l-m)). The gene discussed is EIF3B; the disease is triple-negative breast carcinoma.