Usage History of 'hemoproteins'

The following chart shows how frequently 'hemoproteins' appeared in printed materials over time. For example, the word 'hemoproteins' occurred 4 times in books in 1945 and 462 times in 2008. From 1945 to 2008, the word 'hemoproteins' was used a total of 23,830 times in books scanned by Google. See Reference: Google Ngram project.

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