Usage History of 'serological'

The following chart shows how frequently 'serological' appeared in printed materials over time. For example, the word 'serological' occurred 2 times in books in 1790 and 13,532 times in 2008. From 1790 to 2008, the word 'serological' was used a total of 735,163 times in books scanned by Google. See Reference: Google Ngram project.

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