Usage History of 'somatotropins'

The following chart shows how frequently 'somatotropins' appeared in printed materials over time. For example, the word 'somatotropins' occurred 2 times in books in 1954 and 59 times in 2008. From 1954 to 2008, the word 'somatotropins' was used a total of 1,811 times in books scanned by Google. See Reference: Google Ngram project.

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