Usage History of 'tacrine'

The following chart shows how frequently 'tacrine' appeared in printed materials over time. For example, the word 'tacrine' occurred 2 times in books in 1806 and 2,044 times in 2008. From 1806 to 2008, the word 'tacrine' was used a total of 54,986 times in books scanned by Google. See Reference: Google Ngram project.

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