Usage History of 'kallikreins'

The following chart shows how frequently 'kallikreins' appeared in printed materials over time. For example, the word 'kallikreins' occurred 2 times in books in 1931 and 235 times in 2008. From 1931 to 2008, the word 'kallikreins' was used a total of 13,530 times in books scanned by Google. See Reference: Google Ngram project.

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