Fig. 1
From: Challenges and opportunities of bovine milk analysis by mass spectrometry
Schematic representation of the structure of mammary gland. a A general model of udder, b image of udder with complex tissue comprised of many ducts and alveoli, c an alveolus comprising of many cell types such as secretory and intercalating ducts, d an alveolus showing merocrine mode of secretion for protein component of the milk, e an alveolus showing apocrine mode of secretion for lipid component of the milk