Usage History of 'proteases'

The following chart shows how frequently 'proteases' appeared in printed materials over time. For example, the word 'proteases' occurred 4 times in books in 1808 and 23,909 times in 2008. From 1808 to 2008, the word 'proteases' was used a total of 593,982 times in books scanned by Google. See Reference: Google Ngram project.

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