Usage History of 'cytological'

The following chart shows how frequently 'cytological' appeared in printed materials over time. For example, the word 'cytological' occurred 2 times in books in 1863 and 8,202 times in 2008. From 1863 to 2008, the word 'cytological' was used a total of 547,468 times in books scanned by Google. See Reference: Google Ngram project.

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