Pollen grains under the light microscope. Grains of pollen often cause allergic reactions to the antigens embedded on the outer casing of microscopic grains leading to hay fever and pollinosis. Photo.

Pollen grains under the light microscope. Grains of pollen often cause allergic reactions to the antigens embedded on the outer casing of microscopic grains leading to hay fever and pollinosis. Photo. - 143976292

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