Problem: The lactating mammary gland consist primarily of two cell types: luminal epithelial cells that produce and secrete the milk proteins, and myoepithelial cells that contract to expel milk through the milk ducts towards the nipple.
Think about the organelles and components of the cytoskeleton you have learned about and discuss which organelles and cytoskeletal elements you think will be found in abundance in each of these two cell types.