Usage History of 'microtubule'

The following chart shows how frequently 'microtubule' appeared in printed materials over time. For example, the word 'microtubule' occurred 2 times in books in 1911 and 27,620 times in 2008. From 1911 to 2008, the word 'microtubule' was used a total of 413,801 times in books scanned by Google. See Reference: Google Ngram project.

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