Coloured scanning electron micrograph (SEM) of pollen grains from a cowslip (Primula veris) flower on a petal. Pollen grains are the male sex cells of a flowering plant. Their characteristic surface is used by botanists to recognise and classify plants. Magnification: x4,000 when printed at 15cm wide.

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TOP25735697

Source:

達志影像

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RM

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須由TPG 完整授權

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N/A

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No

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