MDA-MB-231 cells are a human breast cancer cell line known for their highly metastatic and invasive properties. These cells are commonly used as a model for studying cancer metastasis, drug resistance, and the molecular mechanisms driving tumor progression. The red tag indicates that these cells are fluorescently labeled, allowing for real-time tracking and imaging in vitro and in vivo., These cells are provided as a fraction of a T75 flask. They are typically cultured in a standard cell culture medium such as DMEM or RPMI supplemented with serum and antibiotics. These cells are derived from Park Lab (GCRC).