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protophloem

[proh-tuh-floh-em] /ˌproʊ təˈfloʊ ɛm/
noun, Botany
1.
the part of the primary phloem that develops first, consisting of narrow, thin-walled cells.
Origin of protophloem
1880-1885
1880-85; proto- + phloem
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
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protophloem in Science
protophloem
  (prō'tə-flō'ěm')   
The first formed phloem that differentiates from the procambium.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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