Usage History of 'proenzymes'

The following chart shows how frequently 'proenzymes' appeared in printed materials over time. For example, the word 'proenzymes' occurred 8 times in books in 1893 and 522 times in 2008. From 1893 to 2008, the word 'proenzymes' was used a total of 16,606 times in books scanned by Google. See Reference: Google Ngram project.

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