"Xylem" is a descriptor in the National Library of Medicine's controlled vocabulary thesaurus,
MeSH (Medical Subject Headings). Descriptors are arranged in a hierarchical structure,
which enables searching at various levels of specificity.
Plant tissue that carries water up the root and stem. Xylem cell walls derive most of their strength from LIGNIN. The vessels are similar to PHLOEM sieve tubes but lack companion cells and do not have perforated sides and pores.
Below are MeSH descriptors whose meaning is more general than "Xylem".
Below are MeSH descriptors whose meaning is more specific than "Xylem".
This graph shows the total number of publications written about "Xylem" by people in this website by year, and whether "Xylem" was a major or minor topic of these publications.
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