Usage History of 'hemoglobins'

The following chart shows how frequently 'hemoglobins' appeared in printed materials over time. For example, the word 'hemoglobins' occurred 6 times in books in 1875 and 1,790 times in 2008. From 1875 to 2008, the word 'hemoglobins' was used a total of 171,073 times in books scanned by Google. See Reference: Google Ngram project.

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