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  1. 2019New_Mesh_Tree_Hierarchy.txt 
    https://www.nlm.nih.gov/.../download/2019New_Mesh_Tree_Hierarchy.txt
    ... 650.940.800.575.156.577.222.500 Ephedra sinica B01.650.940.800.575.156.577.333 ...
  2. pdf2017MeshTreesWithChangesShown.pdf 
    https://www.nlm.nih.gov/.../2017MeshTreesWithChangesShown.pdf
    ... 650.940.800.575.400.344.222.500 Ephedra sinica - B01.650.940.800.575.400.344.333 ...
  3. pdf2016MeshTree.pdf 
    https://www.nlm.nih.gov/mesh/2016/download/2016MeshTree.pdf
    ... 650.940.800.575.400.344.222.500...........................................Ephedra sinica B01.650.940.800.575.400.344.333........................................... ...