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Itzesussman88
Itzesussman88 Itzesussman88
  • 14-06-2016
  • Biology
Answered

Which type of vessel normally contains valves that prevent the backward flow of materials

Verified Answer :

reaganwebb58
reaganwebb58 reaganwebb58
  • 14-06-2016

Veins is the answer.

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