Usage History of 'keratinize'

The following chart shows how frequently 'keratinize' appeared in printed materials over time. For example, the word 'keratinize' occurred 6 times in books in 1910 and 70 times in 2008. From 1910 to 2008, the word 'keratinize' was used a total of 3,919 times in books scanned by Google. See Reference: Google Ngram project.

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