an Entity references as follows:
MDA-MB-468 is a cell line that was isolated from a 51-year-old female human in 1977, and is commonly used in breast cancer research. MDA-MB-468 cells were extracted from a pleural effusion of mammary gland and breast tissues, and have proven useful for the study of metastasis, migration, and breast cancer proliferation. MDA-MB-468 has been used to test chemical breast cancer treatments.