A2 milk is cow 's milk that mostly lacks a form of β - casein proteins called A1 and instead has mostly the A2 form. Milk like this was brought to market by The a2 Milk Company and is sold mostly in Australia, New Zealand, China, United States and the United Kingdom.
what is the difference between a2 milk and regular milk
mostly lacks a form of β - casein proteins called A1 and instead has mostly the A2 form