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Phloem
[File:Stem-histology-cross-section-tag.svg|thumb|right|250px|Cross-section of a flax plant stem:
1.  Pith,
2.  Protoxylem,
3.  Xylem I,
4. Phloem I,
5.  Sclerenchyma (bast fibre),
6.  Cortex,
7.  Epidermis]]

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