The key cellular components of breast tissue include epithelial cells, myoepithelial cells, fibroblasts, and adipocytes. Epithelial cells line the ducts and lobules, while myoepithelial cells surround the epithelial cells and help in milk ejection during lactation. Fibroblasts are found in the connective tissue and are responsible for producing the extracellular matrix. Adipocytes are fat cells that store lipids.
