protamine

例句：

1. 1.Protamine is a naturally occurring protein that helps to prevent blood clots.
   凝血酶原是一种自然发生的蛋白质，有助于防止血栓形成。
2. 2.The medication contains protamine, which can help with digestion and absorption.
   这种药物含有凝血酶原，可以帮助消化和吸收。
3. 3.Protamine is often used in food processing to improve texture and flavor.
   在食品加工中，凝血酶原常被用来改善质地和风味。