Protease.Any enzymes that breaks down into its building blocks,amino acids  is called protease which is in general term your digestive  tract  produces number of these enzymes but three main protease are pepsin , trypsin, chymotrypsin
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These are the enzymes which help in the breaking down of complex food particles into simple ones.the complex material which get broke down by these enzymes can be easily absorbed by the blood and thus transported to all the cells of the body.Digestive enzymes such as amylase, lipase, pepsin, trypsin, etc. Are present there.
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