Usage History of 'proinsulin'

The following chart shows how frequently 'proinsulin' appeared in printed materials over time. For example, the word 'proinsulin' occurred 5 times in books in 1946 and 1,832 times in 2008. From 1946 to 2008, the word 'proinsulin' was used a total of 86,077 times in books scanned by Google. See Reference: Google Ngram project.

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