Usage History of 'provirus'

The following chart shows how frequently 'provirus' appeared in printed materials over time. For example, the word 'provirus' occurred 56 times in books in 1937 and 1,461 times in 2008. From 1937 to 2008, the word 'provirus' was used a total of 74,339 times in books scanned by Google. See Reference: Google Ngram project.

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