The properties of plasmin and plasminogen in milk are the same as in blood.In milk,plasmin is associated with casein,and it has highly proteolytic activity.

• 叙述了乳中存在的纤维蛋白溶酶及其酶原与血液中的酶特性相似,在乳中与酪蛋白结合,并有较强的蛋白水解活性。