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The airborne Japanese cedar pollen count and the number of new patients with Japanese cedar pollinosis over time. (a) ○: Number of new patients. Of 414 patients enrolled, 19 patients who developed pollinosis in 1964 or earlier were excluded, and the results of 395 patients are shown (data from Tokyo Medical and Dental University). (b) Each column represents a pollen count. Japanese cedar pollen counts from Sagamihara National Hospital (Director, Takao Shida) (Modified from ref. 18).
