[Elimination of Japanese cedar (Cryptomeria japonica) aeropollen by rainfall].


The concentration of aeropollens of Japanese cedar decreases on rainy days, due to the rainfall removing pollens from the atmosphere. An analysis was performed of the concentration of pollen grains in rain water samples from Yokohama during the period February 10 to April 30, 1991. Sampling of rain water was performed using an automatic rain water collector… (More)


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