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25.0 MB (954.2 KB compressed)
3673 x 2376 pixels
31.0 x 20.1 cm ⏐ 12.2 x 7.9 in (300dpi)
LOUISE HUGHES / SCIENCE PHOTO LIBRARY LOUISE HUGHES / SCIENCE PHOTO LIBRARY
Willow pollen. Coloured scanning electron micrograph (SEM) of a pollen grain from a willow (Salix sp.) flower. Pollen grains are the male gametes (sex cells) of a plant.
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