AMI IMAGES / SCIENCE PHOTO LIBRARY AMI IMAGES / SCIENCE PHOTO LIBRARY
Pollen grains. Coloured scanning electron micrograph (SEM) of pollen grains from a variety of plants. Including: sunflower (Helianthus annuus), morning glory (Ipomoea purpurea), hollyhock (Sidalcea malviflora), lily (Lilium auratum), primrose (Oenothera fruticosa), and caster bean (Ricinus communis). Magnification: x570 when printed at 10 centimetres tall.
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