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Light micrograph transverse section of a Sunflower (Helianthus species) dicotyledon stem section, TS, UK. - SuperStock
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Helianthus Stem Micrograph Stock Photo - Download Image Now - Biological Cell, Cross Section, Graph - iStock
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Helianthus Herbaceous Dicot Stem Cross Section Vascular Bundles Cortex Pith 25x High-Res Stock Photo - Getty Images
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Sunflower Stalk Cross-section Under the Microscope, (Helianthus Stock Image - Image of detail, stem: 50680869
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