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Visual display of the Labeled view of phloem in a longitudinal section of Cucurbita stem - prepared slide 10x objective

Labeled view of phloem in a longitudinal section of Cucurbita stem - prepared slide 10x objective

  • Photomicrograph
  • The phloem here includes immature sieve tube elements with nuclei, mature sieve tube elements without nuclei, and a protoxylem vessel with helical secondary wall thickenings.