Medical tests started in the 1940s and 1950s, searching for the cause of the disease. Initially, it was expected to be lead poisoning due to the lead mining upstream. Only in 1955 did Dr. Ogino and his colleagues suspect cadmium as the cause of the disease. Ogino coined the term itai-itai disease.
Salix babylonica, commonly called weeping willow or Babylon weeping willow, is a medium to large deciduous tree with a stout trunk topped by a graceful broad-rounded crown of branches that sweep downward to the ground.It grows to 30-50â (sometimes to 60â) tall and as wide.It is native to China.alix babylonica, commonly called weeping willow or Babylon weeping willow, is a medium to large deciduous tree with a stout trunk topped by a graceful broad-rounded crown of branches that sweep downward to the ground. It grows to 30-50â (sometimes to 60â) tall and as wide. It is native to China.
A weeping tree is one where the branches and/or leaves droop downward, creating a graceful profile. Most of these trees do not have this habit normally and are a result of mutations.These unusual specimens are propagated for sale through grafting, where they are placed onto rootstock of the standard species. weeping tree is one where the branches and/or leaves droop downward, creating a graceful profile. Most of these trees do not have this habit normally and are a result of mutations. These unusual specimens are propagated for sale through grafting, where they are placed onto rootstock of the standard species.