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  1. 2019New_Mesh_Tree_Hierarchy.txt 
    https://www.nlm.nih.gov/.../download/2019New_Mesh_Tree_Hierarchy.txt
    ... 940.800.575.912.250.100.100.144 Artemisia annua B01.650.940.800.575.912.250.100. ...
  2. pdf2017MeshTreesWithChangesShown.pdf 
    https://www.nlm.nih.gov/.../2017MeshTreesWithChangesShown.pdf
    ... Ageratum Ambrosia Ammi Arctium Arnica Artemisia Artemisia absinthium Artemisia annua Aster Plant Atractylis Atractylodes Baccharis Bidens Calendula Callilepis ...
  3. pdf2016MeshTree.pdf 
    https://www.nlm.nih.gov/mesh/2016/download/2016MeshTree.pdf
    ... 650.940.800.575.100.100.100.144...........................................Artemisia annua B01.650.940.800.575.100.100.111........................................... ...