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Pesticide Droplets on the Surface of Taraxcum sp Leaf

Droplets in the size range 5 –10um were sprayed onto the upper surface of the leaf. The epidermis bears waxes and the droplets, in many cases, run off into the clefts between epidermal cells. Conventional preparation methods would clearly not be suitable for demonstrating this unusual distribution.

Bar = 50um, inset 25um