Search on: XYLEM 
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Descriptor English:   Xylem 
Descriptor Spanish:   Xilema 
Descriptor Portuguese:   Xilema 
Tree Number:   B06.413.700
Definition English:   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. 
History Note English:   2007 
Allowable Qualifiers English:  
adverse effects anatomy & histology
chemistry classification
cytology drug effects
embryology enzymology
growth & development genetics
immunology metabolism
microbiology physiology
poisoning parasitology
radiation effects toxicity
ultrastructure virology
Record Number:   52091 
Unique Identifier:   D052584 

Occurrence in VHL: 		 

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