Usage History of 'tryptamine'

The following chart shows how frequently 'tryptamine' appeared in printed materials over time. For example, the word 'tryptamine' occurred 2 times in books in 1920 and 889 times in 2008. From 1920 to 2008, the word 'tryptamine' was used a total of 68,539 times in books scanned by Google. See Reference: Google Ngram project.

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